diff --git a/app/locale/ar.coffee b/app/locale/ar.coffee
index 8aa08dfc3..27c10e08a 100644
--- a/app/locale/ar.coffee
+++ b/app/locale/ar.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "العربية", englishDescription: "Arabi
     campaign_player_created_description: "... فيها تقاتل ضد الإبداع الخاص بـزميلك<a href=\"/contribute#artisan\"> الحرفيّ الساحر</a>."
     campaign_classic_algorithms: "الخوارزميات التقليديّة"
     campaign_classic_algorithms_description: "... فيها تتعلّم خوارزميّات الأكثر شعبيّة في علوم الحاسب الآلي."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "العربية", englishDescription: "Arabi
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "العربية", englishDescription: "Arabi
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "العربية", englishDescription: "Arabi
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "العربية", englishDescription: "Arabi
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "العربية", englishDescription: "Arabi
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "العربية", englishDescription: "Arabi
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "العربية", englishDescription: "Arabi
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "أضيفت"
diff --git a/app/locale/bg.coffee b/app/locale/bg.coffee
index 0b1210e62..80fd88d41 100644
--- a/app/locale/bg.coffee
+++ b/app/locale/bg.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "български език", englishDescri
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
     campaign_classic_algorithms: "Класически алгоритми"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Справяш се чудесно! Сподели с някого,колко много научи чрез CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "български език", englishDescri
 
   subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
     feature5: "Видео уроци"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "български език", englishDescri
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "български език", englishDescri
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "български език", englishDescri
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "български език", englishDescri
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "български език", englishDescri
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "български език", englishDescri
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/ca.coffee b/app/locale/ca.coffee
index 27d02b5a1..50d71eb89 100644
--- a/app/locale/ca.coffee
+++ b/app/locale/ca.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Català", englishDescription: "Catalan", tr
     campaign_player_created_description: "... on lluites contra la creativitat dels teus companys <a href=\"/contribute#artisan\">Artisan Wizards</a>."
     campaign_classic_algorithms: "Algoritmes classics"
     campaign_classic_algorithms_description: "... on pots aprendre els algoritmes més populars de l'informàtica."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Estàs progressant molt! Digues a algú quan n'has après amb CodeCombat." # {change}
@@ -408,8 +410,8 @@ module.exports = nativeDescription: "Català", englishDescription: "Catalan", tr
   subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
     feature1: "60+ nivells bàsics a traves de 4 móns" # {change}
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
     feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Català", englishDescription: "Catalan", tr
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Català", englishDescription: "Catalan", tr
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Català", englishDescription: "Catalan", tr
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Català", englishDescription: "Catalan", tr
     level_tab_thangs_all: "Tot"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Català", englishDescription: "Catalan", tr
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Català", englishDescription: "Catalan", tr
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "Afegit"
diff --git a/app/locale/cs.coffee b/app/locale/cs.coffee
index 935dde749..6ca871a86 100644
--- a/app/locale/cs.coffee
+++ b/app/locale/cs.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "čeština", englishDescription: "Czech", tr
     campaign_player_created_description: "...ve kterých bojujete proti kreativitě ostatních <a href=\"/contribute#artisan\">Zdatných Kouzelníků</a>."
     campaign_classic_algorithms: "Klasické algoritmy"
     campaign_classic_algorithms_description: "... ve kterých se naučíte nejoblíbenější algoritmy v IT."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Děláš velké pokroky!  Řekni někomu, co jsi se už naučil s CodeCombat." # {change}
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "čeština", englishDescription: "Czech", tr
   subscribe:
     comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
     feature1: "60+ základních úrovní napříč 4 světy" # {change}
-    feature2: "7 silných <strong>nových hrdinů</strong> s jedinečnými dovednostmi!"
+    feature2: "7 silných <strong>nových hrdinů</strong> s jedinečnými dovednostmi!" # {change}
     feature3: "30+ bonusových úrovní" # {change}
     feature4: "<strong>3500 bonusových drahokamů</strong> každý měsíc!"
     feature5: "Video tutoriály"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "čeština", englishDescription: "Czech", tr
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "čeština", englishDescription: "Czech", tr
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "čeština", englishDescription: "Czech", tr
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "čeština", englishDescription: "Czech", tr
     level_tab_thangs_all: "Všechny"
     level_tab_thangs_conditions: "Výchozí prostředí"
     level_tab_thangs_add: "Přidat Thangy"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "Přidat součásti"
     component_configs: "Nastavení součástí"
     config_thang: "Dvoj-klik pro konfiguraci thangu"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "čeština", englishDescription: "Czech", tr
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "čeština", englishDescription: "Czech", tr
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "Přidáno"
diff --git a/app/locale/da.coffee b/app/locale/da.coffee
index 152419f78..e79689712 100644
--- a/app/locale/da.coffee
+++ b/app/locale/da.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "dansk", englishDescription: "Danish", trans
     campaign_player_created_description: "... hvor du kæmper mod dine med-<a href=\"/contribute#artisan\">Kunsthåndværker-troldmænd</a>s kreativitet."
     campaign_classic_algorithms: "Klassiske Algoritmer"
     campaign_classic_algorithms_description: "... hvor du lærer de mest populære algoritmer i Computervidenskab."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Du gør godt fremskridt! Fortæl din forælder hvor meget du har lært med CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "dansk", englishDescription: "Danish", trans
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "dansk", englishDescription: "Danish", trans
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "dansk", englishDescription: "Danish", trans
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "dansk", englishDescription: "Danish", trans
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "dansk", englishDescription: "Danish", trans
 #    level_tab_thangs_all: "All"
     level_tab_thangs_conditions: "Startbetingelser"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "dansk", englishDescription: "Danish", trans
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "dansk", englishDescription: "Danish", trans
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/de-AT.coffee b/app/locale/de-AT.coffee
index 3dc6e60a8..b0f297006 100644
--- a/app/locale/de-AT.coffee
+++ b/app/locale/de-AT.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Deutsch (Österreich)", englishDescription:
     campaign_player_created_description: "... in welchem Du gegen die Kreativität eines <a href=\"/contribute#artisan\">Artisan Zauberers</a> kämpfst."
     campaign_classic_algorithms: "Klassiche Algorithmen"
     campaign_classic_algorithms_description: "... in welchem du die populärsten Algorithmen der Informatik lernst."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Deutsch (Österreich)", englishDescription:
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Deutsch (Österreich)", englishDescription:
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Deutsch (Österreich)", englishDescription:
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Deutsch (Österreich)", englishDescription:
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Deutsch (Österreich)", englishDescription:
     level_tab_thangs_all: "Alle"
     level_tab_thangs_conditions: "Startbedingungen"
     level_tab_thangs_add: "Thangs hinzufügen"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Deutsch (Österreich)", englishDescription:
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Deutsch (Österreich)", englishDescription:
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "hinzugefügt"
diff --git a/app/locale/de-CH.coffee b/app/locale/de-CH.coffee
index 1e1e47e03..7a51b7696 100644
--- a/app/locale/de-CH.coffee
+++ b/app/locale/de-CH.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Dütsch (Schwiiz)", englishDescription: "Ge
     campaign_player_created_description: "... i dene du gege d Kreativität vome <a href=\"/contribute#artisan\">Handwerker Zauberer</a> kämpfsch."
     campaign_classic_algorithms: "Klassischi Algorithme"
     campaign_classic_algorithms_description: "... wo du die beliebtischte Algorithmue vode Computer Welt lernsch.."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Du machsch grossi Fortschritts! Verzells öperem wieviel du glernt häsch mit CodeCombat."
@@ -407,8 +409,8 @@ module.exports = nativeDescription: "Dütsch (Schwiiz)", englishDescription: "Ge
 
   subscribe:
     comparison_blurb: "Verschärf dins Chönne midme CodeCombat Abonement."
-    feature1: "80+ basis levels in 4 Weltete!"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
+    feature1: "80+ basis levels in 4 Weltete!" # {change}
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
     feature3: "50+ bonus levels" # {change}
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
     feature5: "Video Aleitige"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Dütsch (Schwiiz)", englishDescription: "Ge
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Dütsch (Schwiiz)", englishDescription: "Ge
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Dütsch (Schwiiz)", englishDescription: "Ge
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Dütsch (Schwiiz)", englishDescription: "Ge
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Dütsch (Schwiiz)", englishDescription: "Ge
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Dütsch (Schwiiz)", englishDescription: "Ge
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/de-DE.coffee b/app/locale/de-DE.coffee
index ec57b1782..98ce8813e 100644
--- a/app/locale/de-DE.coffee
+++ b/app/locale/de-DE.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Deutsch (Deutschland)", englishDescription:
     campaign_player_created_description: "... in welchem Du gegen die Kreativität eines <a href=\"/contribute#artisan\">Artisan Zauberers</a> kämpfst."
     campaign_classic_algorithms: "Klassische Algorithmen"
     campaign_classic_algorithms_description: "... in welchem du die populärsten Algorithmen der Informatik lernst."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Du machst dich gut! Sag jemanden wie viel du mit CodeCombat gelernt hast." # {change}
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "Deutsch (Deutschland)", englishDescription:
   subscribe:
     comparison_blurb: "Verbessere deine Fähigkeiten mit einem CodeCombat Abonnement"
     feature1: "60+ Basislevel in 4 Gebieten" # {change}
-    feature2: "7 mächtige <strong>neue Helden</strong> mit einzigartigen Fertigkeiten"
+    feature2: "7 mächtige <strong>neue Helden</strong> mit einzigartigen Fertigkeiten" # {change}
     feature3: "30+ Bonuslevel" # {change}
     feature4: "<strong>3500 Bonusedelsteine</strong> jeden Monat!"
     feature5: "Videoanleitungen"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Deutsch (Deutschland)", englishDescription:
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Deutsch (Deutschland)", englishDescription:
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Deutsch (Deutschland)", englishDescription:
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Deutsch (Deutschland)", englishDescription:
     level_tab_thangs_all: "Alle"
     level_tab_thangs_conditions: "Startbedingungen"
     level_tab_thangs_add: "Thangs hinzufügen"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "Kommentar hinzufügen"
     component_configs: "Komponenten Konfiguration"
     config_thang: "Doppelklicke, um Thang zu konfigurieren"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Deutsch (Deutschland)", englishDescription:
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Deutsch (Deutschland)", englishDescription:
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "hinzugefügt"
diff --git a/app/locale/el.coffee b/app/locale/el.coffee
index a06f8dec1..0460e7c20 100644
--- a/app/locale/el.coffee
+++ b/app/locale/el.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Ελληνικά", englishDescription: "Gre
     campaign_player_created_description: "... στην οποία μάχεστε ενάντια στην δημιουργικότητα των συναδέλφων <a href=\"/contribute#artisan\">Τεχνιτών Μάγων</a>."
     campaign_classic_algorithms: "Κλασσικοί Αλγόριθμοι"
     campaign_classic_algorithms_description: "... στο οποίο μαθαίνετε του πιο δημοφιλής αλγορίθμους της Επιστήμης της Πληροφορικής."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Ελληνικά", englishDescription: "Gre
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Ελληνικά", englishDescription: "Gre
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Ελληνικά", englishDescription: "Gre
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Ελληνικά", englishDescription: "Gre
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Ελληνικά", englishDescription: "Gre
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Ελληνικά", englishDescription: "Gre
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Ελληνικά", englishDescription: "Gre
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/en-GB.coffee b/app/locale/en-GB.coffee
index 4948e34a7..f48957ce2 100644
--- a/app/locale/en-GB.coffee
+++ b/app/locale/en-GB.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "English (UK)", englishDescription: "English
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "English (UK)", englishDescription: "English
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "English (UK)", englishDescription: "English
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "English (UK)", englishDescription: "English
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "English (UK)", englishDescription: "English
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "English (UK)", englishDescription: "English
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "English (UK)", englishDescription: "English
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "English (UK)", englishDescription: "English
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/en-US.coffee b/app/locale/en-US.coffee
index affad245c..13fe9c9ea 100644
--- a/app/locale/en-US.coffee
+++ b/app/locale/en-US.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "English (US)", englishDescription: "English
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "English (US)", englishDescription: "English
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "English (US)", englishDescription: "English
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "English (US)", englishDescription: "English
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "English (US)", englishDescription: "English
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "English (US)", englishDescription: "English
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "English (US)", englishDescription: "English
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "English (US)", englishDescription: "English
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/en.coffee b/app/locale/en.coffee
index 7d0ef01c2..68a54c218 100644
--- a/app/locale/en.coffee
+++ b/app/locale/en.coffee
@@ -92,6 +92,8 @@
     campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
     campaign_classic_algorithms: "Classic Algorithms"
     campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@
 
   subscribe:
     comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-    feature1: "100+ basic levels across 4 worlds" # {change}
-    feature2: "10 powerful <strong>new heroes</strong> with unique skills!" # {change}
-    feature3: "70+ bonus levels" # {change}
+    feature1: "100+ basic levels across 4 worlds"
+    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+    feature3: "70+ bonus levels"
     feature4: "<strong>3500 bonus gems</strong> every month!"
     feature5: "Video tutorials"
     feature6: "Premium email support"
@@ -597,18 +599,18 @@
     intro_2: "No experience required!"
     free_title: "How much does it cost?"
     cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-    free_1: "There are 100+ FREE levels which cover every concept." # {change}
+    free_1: "There are 100+ FREE levels which cover every concept."
     free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
     teacher_subs_title: "Teachers get free subscriptions!"
     teacher_subs_1: "Please fill out our"
     teacher_subs_2: "Teacher Survey"
     teacher_subs_3: "to set up your subscription."
     sub_includes_title: "What is included in the subscription?"
-    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:" # {change}
-    sub_includes_2: "70+ practice levels" # {change}
+    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+    sub_includes_2: "70+ practice levels"
     sub_includes_3: "Video tutorials"
     sub_includes_4: "Premium email support"
-    sub_includes_5: "10 new heroes with unique skills to master" # {change}
+    sub_includes_5: "10 new heroes with unique skills to master"
     sub_includes_6: "3500 bonus gems every month"
     sub_includes_7: "Private Clans"
     monitor_progress_title: "How do I monitor student progress?"
@@ -624,8 +626,8 @@
     who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
     who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
     material_title: "How much material is there?"
-    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far." # {change}
-    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content." # {change}
+    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
     concepts_title: "What concepts are covered?"
     how_much_title: "How much does a monthly subscription cost?"
     how_much_1: "A"
@@ -861,6 +863,8 @@
     indoor: "Indoor"
     desert: "Desert"
     grassy: "Grassy"
+    mountain: "Mountain"
+    glacier: "Glacier"
     small: "Small"
     large: "Large"
     fork_title: "Fork New Version"
@@ -1219,6 +1223,7 @@
   delta:
     added: "Added"
     modified: "Modified"
+    not_modified: "Not Modified"
     deleted: "Deleted"
     moved_index: "Moved Index"
     text_diff: "Text Diff"
diff --git a/app/locale/eo.coffee b/app/locale/eo.coffee
index 2a5f58cee..4ff2db320 100644
--- a/app/locale/eo.coffee
+++ b/app/locale/eo.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Esperanto", englishDescription: "Esperanto"
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Esperanto", englishDescription: "Esperanto"
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Esperanto", englishDescription: "Esperanto"
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Esperanto", englishDescription: "Esperanto"
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Esperanto", englishDescription: "Esperanto"
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Esperanto", englishDescription: "Esperanto"
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Esperanto", englishDescription: "Esperanto"
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Esperanto", englishDescription: "Esperanto"
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/es-419.coffee b/app/locale/es-419.coffee
index 772769f1e..91d2462c4 100644
--- a/app/locale/es-419.coffee
+++ b/app/locale/es-419.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Español (América Latina)", englishDescrip
     campaign_player_created_description: "... en los que luchas contra la creatividad de tus compañeros <a href=\"/contribute#artisan\">Hechiceros Artesanales</a>."
     campaign_classic_algorithms: "Algorítmos Clásicos"
     campaign_classic_algorithms_description: "... en la cual aprendes los algorítmos más populares de la Ciencia de la Computación."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "¡Estás haciendo un gran progreso! Cuéntale a alguien cuánto has aprendido con CodeCombat." # {change}
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "Español (América Latina)", englishDescrip
   subscribe:
     comparison_blurb: "Agudiza tus habilidades con la suscripción a CodeCombat!"
     feature1: "Más de 60 niveles basicos a lo largo de 4 mundos" # {change}
-    feature2: "7 poderosos <strong>nuevos heroés</strong> con habilidades unicas!"
+    feature2: "7 poderosos <strong>nuevos heroés</strong> con habilidades unicas!" # {change}
     feature3: "Más de 30 niveles extras" # {change}
     feature4: "<strong>3500 gemas bonus</strong> cada mes!"
     feature5: "Video tutoriales"
@@ -607,7 +609,7 @@ module.exports = nativeDescription: "Español (América Latina)", englishDescrip
     sub_includes_2: "Más de 40 niveles de práctica" # {change}
     sub_includes_3: "Video tutoriales"
     sub_includes_4: "Soporte de correo electronico Premium"
-    sub_includes_5: "7 heroes nuevos con habilidades unicas que dominar"
+    sub_includes_5: "7 heroes nuevos con habilidades unicas que dominar" # {change}
     sub_includes_6: "bonificación de 3500 gemas cada mes"
     sub_includes_7: "Clanes privados"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Español (América Latina)", englishDescrip
     make_private: "Hacer clan privado"
     subs_only: "solo suscriptores"
     create_clan: "Crear nuevo clan"
+#    private_preview: "Preview"
     public_clans: "Clanes publicos"
     my_clans: "Mis Clanes"
     clan_name: "Nombre del clan"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Español (América Latina)", englishDescrip
     level_tab_thangs_all: "Todo"
     level_tab_thangs_conditions: "Condiciones Iniciales"
     level_tab_thangs_add: "Agregar Thangs"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "Agregar Componentes"
     component_configs: "Configuraciones del Componente"
     config_thang: "Doble clic para configurar un thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Español (América Latina)", englishDescrip
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Español (América Latina)", englishDescrip
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "Agregado"
diff --git a/app/locale/es-ES.coffee b/app/locale/es-ES.coffee
index 696899fe3..2faf75426 100644
--- a/app/locale/es-ES.coffee
+++ b/app/locale/es-ES.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "español (ES)", englishDescription: "Spanis
     campaign_player_created_description: "... en las que luchas contra la creatividad de tus compañeros <a href=\"/contribute#artisa\">Magos Artesanos</a>."
     campaign_classic_algorithms: "Algoritmos Clasicos"
     campaign_classic_algorithms_description: "... donde aprendes los algoritmos mas populares de la informatica."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "¡Estás teniendo un gran progreso! Cuéntale a alguien que tanto habeis aprendido con CodeCombat." # {change}
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "español (ES)", englishDescription: "Spanis
 
   subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
     feature5: "Vídeo tutoriales"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "español (ES)", englishDescription: "Spanis
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "español (ES)", englishDescription: "Spanis
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "español (ES)", englishDescription: "Spanis
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "español (ES)", englishDescription: "Spanis
     level_tab_thangs_all: "Todo"
     level_tab_thangs_conditions: "Condiciones de inicio"
     level_tab_thangs_add: "Añadir Objetos"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "español (ES)", englishDescription: "Spanis
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "español (ES)", englishDescription: "Spanis
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "Añadido"
diff --git a/app/locale/fa.coffee b/app/locale/fa.coffee
index d08d6b85e..e4afc7e2c 100644
--- a/app/locale/fa.coffee
+++ b/app/locale/fa.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "فارسی", englishDescription: "Persian",
     campaign_player_created_description: "... جایی که در مقابل خلاقیت نیرو هاتون قرار میگیرید <a href=\"/contribute#artisan\">جادوگران آرتیزان</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "فارسی", englishDescription: "Persian",
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "فارسی", englishDescription: "Persian",
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "فارسی", englishDescription: "Persian",
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "فارسی", englishDescription: "Persian",
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "فارسی", englishDescription: "Persian",
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "فارسی", englishDescription: "Persian",
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "فارسی", englishDescription: "Persian",
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/fi.coffee b/app/locale/fi.coffee
index 26e913e77..e507e6d0d 100644
--- a/app/locale/fi.coffee
+++ b/app/locale/fi.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "suomi", englishDescription: "Finnish", tran
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Edistyt loistavasti! Kerro ystävillesi mitä olet oppinut CodeCombat:n avulla."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "suomi", englishDescription: "Finnish", tran
 
   subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "suomi", englishDescription: "Finnish", tran
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "suomi", englishDescription: "Finnish", tran
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "suomi", englishDescription: "Finnish", tran
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "suomi", englishDescription: "Finnish", tran
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "suomi", englishDescription: "Finnish", tran
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "suomi", englishDescription: "Finnish", tran
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/fr.coffee b/app/locale/fr.coffee
index a7b2f8643..42c61cfaa 100644
--- a/app/locale/fr.coffee
+++ b/app/locale/fr.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "français", englishDescription: "French", t
     campaign_player_created_description: "... dans lesquels vous serez confronté à la créativité des vôtres.<a href=\"/contribute#artisan\">Artisan Wizards</a>."
     campaign_classic_algorithms: "Algorithmes classiques"
     campaign_classic_algorithms_description: "... dans lesquels vous apprendrez les algorithmes les plus populaires dans l'informatique."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Vous faites beaucoup de progrès ! Partagez ce que vous avez appris grâce à CodeCombat avec vos amis." # {change}
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "français", englishDescription: "French", t
   subscribe:
     comparison_blurb: "Aiguisez vos compétences avec un abonnement CodeCombat !"
     feature1: "Plus de 60 niveaux au travers de 4 mondes" # {change}
-    feature2: "7 puissants <strong>nouveaux héros</strong> avec des compétences uniques !"
+    feature2: "7 puissants <strong>nouveaux héros</strong> avec des compétences uniques !" # {change}
     feature3: "Plus de 30 niveaux bonus" # {change}
     feature4: "<strong>3500 gemmes bonus</strong> tous les mois !"
     feature5: "Tutoriels vidéo"
@@ -607,7 +609,7 @@ module.exports = nativeDescription: "français", englishDescription: "French", t
     sub_includes_2: "40+ niveaux d'entrainement" # {change}
     sub_includes_3: "Des tutoriels vidéo"
     sub_includes_4: "Support email premium"
-    sub_includes_5: "7 nouveaux héros avec des capacités uniques à maitriser"
+    sub_includes_5: "7 nouveaux héros avec des capacités uniques à maitriser" # {change}
     sub_includes_6: "3500 gemmes bonus chaque mois"
     sub_includes_7: "Clans Privées"
     monitor_progress_title: "Comment puis-je faire pour surveiller les progrès des étudiants?"
@@ -623,7 +625,7 @@ module.exports = nativeDescription: "français", englishDescription: "French", t
     who_for_1: "Nous recommandons CodeCombat pour les élèves âgés de 9 ans ou plus. Aucune expérience préalable de programmation n'est requise."
     who_for_2: "Nous avons conçu CodeCombat pour plaire à la fois aux garçons et aux filles."
     material_title: "Quelle quantité de contenu y a t-il ?"
-    material_china: "Il y a en moyenne une trentaine d'heures de temps de jeu distribué sur plus de 140 abonnés jusqu'à maintenant avec des nouveaux niveaux qui s'ajoutent à chaque semaine."
+    material_china: "Il y a en moyenne une trentaine d'heures de temps de jeu distribué sur plus de 140 abonnés jusqu'à maintenant avec des nouveaux niveaux qui s'ajoutent à chaque semaine." # {change}
     material_1: "Environ 8 heures de contenu gratuit et 14 heures de contenu supplémentaire reservé aux abonnés, avec 5 nouveaux niveaux chaque semaines." # {change}
     concepts_title: "Quels concepts sont couverts ?"
     how_much_title: "Combien coûte un abonnement mensuel ?"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "français", englishDescription: "French", t
     make_private: "Rendre le clan privé"
     subs_only: "Abonnés seulement"
     create_clan: "Créer un nouveau clan"
+#    private_preview: "Preview"
     public_clans: "Clans publiques"
     my_clans: "Mes clans"
     clan_name: "Nom du clan"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "français", englishDescription: "French", t
     level_tab_thangs_all: "Tout"
     level_tab_thangs_conditions: "Conditions de départ"
     level_tab_thangs_add: "Ajouter des Thangs"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "Ajouter des composants"
     component_configs: "Configuration des composants"
     config_thang: "Double-cliquez pour configurer un Thang"
@@ -1191,25 +1195,27 @@ module.exports = nativeDescription: "français", englishDescription: "French", t
     poll: "Sondage"
     user_polls_record: "Historique de sondage des utilisateurs"
 
-#  concepts:
-#    advanced_strings: "Advanced Strings"
-#    algorithms: "Algorithms"
-#    arithmetic: "Arithmetic"
-#    arrays: "Arrays"
-#    basic_syntax: "Basic Syntax"
-#    boolean_logic: "Boolean Logic"
-#    break_statements: "Break Statements"
-#    classes: "Classes"
-#    for_loops: "For Loops"
-#    functions: "Functions"
-#    if_statements: "If Statements"
-#    input_handling: "Input Handling"
-#    math_operations: "Math Operations"
-#    object_literals: "Object Literals"
-#    strings: "Strings"
-#    variables: "Variables"
-#    vectors: "Vectors"
-#    while_loops: "While Loops"
+  concepts:
+    advanced_strings: "Chaînes de caractères avancés"
+    algorithms: "Algorithmes"
+#    arguments: "Arguments"
+    arithmetic: "Arithmétique"
+    arrays: "Tableaux"
+    basic_syntax: "Syntaxe basique"
+    boolean_logic: "Logique Booléenne"
+    break_statements: "Déclarations de sortie"
+    classes: "Classes"
+    for_loops: "Bloucles Pour"
+    functions: "Fonctions"
+    if_statements: "Déclarations conditionnelles Si"
+    input_handling: "Manipulation des entrées"
+    math_operations: "Opérations mathématiques"
+    object_literals: "Objets littéraux"
+    strings: "Chaînes de caractères"
+    variables: "Variables"
+    vectors: "Vecteurs"
+    while_loops: "Boucles Tant que"
+#    recursion: "Recursion"
 
   delta:
     added: "Ajouté"
diff --git a/app/locale/gl.coffee b/app/locale/gl.coffee
index ab9f85c8b..0bafc24e0 100644
--- a/app/locale/gl.coffee
+++ b/app/locale/gl.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Galego", englishDescription: "Galician", tr
     campaign_player_created_description: "... nas que loitas contra a creatividade dos teus compañeiros <a href=\"/contribute#artisa\">Magos Artesáns</a>."
     campaign_classic_algorithms: "Algoritmos Clásicos"
     campaign_classic_algorithms_description: "... donde aprendes os algoritmos máis populares da informática."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Galego", englishDescription: "Galician", tr
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Galego", englishDescription: "Galician", tr
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Galego", englishDescription: "Galician", tr
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Galego", englishDescription: "Galician", tr
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Galego", englishDescription: "Galician", tr
     level_tab_thangs_all: "Todo"
     level_tab_thangs_conditions: "Condicións de inicio"
     level_tab_thangs_add: "Engadir Obxectos"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Galego", englishDescription: "Galician", tr
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Galego", englishDescription: "Galician", tr
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "Engadido"
diff --git a/app/locale/he.coffee b/app/locale/he.coffee
index 22400bc25..66c9fd97a 100644
--- a/app/locale/he.coffee
+++ b/app/locale/he.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "עברית", englishDescription: "Hebrew",
     campaign_player_created_description: "... שבהם תילחם נגד היצירתיות של <a href=\"/contribute#artisan\">בעלי-המלאכה</a>."
     campaign_classic_algorithms: "אלגוריתמים קלאסיים"
     campaign_classic_algorithms_description: ".שבהם תלמד את האלגוריתמים הפופולאריים ביותר בתחום מדעי המחשב..."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: ".אתה מתקדם מצויין! ספר למישהו כמה למדת"
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "עברית", englishDescription: "Hebrew",
   subscribe:
     comparison_blurb: ".CodeCombatחדד את כישוריך עם מנוי ל"
     feature1: "60+ שלבים בסיסיים ב 4 עולמות שונים." # {change}
-    feature2: "!עם כישורים מיוחדים <strong>גיבורים עוצמתיים חדשים</strong> 7"
+    feature2: "!עם כישורים מיוחדים <strong>גיבורים עוצמתיים חדשים</strong> 7" # {change}
     feature3: "30+ שלבי בונוס" # {change}
     feature4: "!בחינם כל חודש <strong>3500 אבני חן</strong>"
     feature5: "הדרכות וידאו"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "עברית", englishDescription: "Hebrew",
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "עברית", englishDescription: "Hebrew",
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "עברית", englishDescription: "Hebrew",
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "עברית", englishDescription: "Hebrew",
     level_tab_thangs_all: "הכל"
     level_tab_thangs_conditions: "תנאים התחלתיים"
     level_tab_thangs_add: "הוסף ת'אנגס"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "הוסף מרכיבים"
     component_configs: "קבע תצורת מרכיבים"
     config_thang: "לחץ פעמיים כדי לשנות ת'אנג"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "עברית", englishDescription: "Hebrew",
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "עברית", englishDescription: "Hebrew",
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "נוסף"
diff --git a/app/locale/hi.coffee b/app/locale/hi.coffee
index ba0abd5fc..2af868aa5 100644
--- a/app/locale/hi.coffee
+++ b/app/locale/hi.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "मानक हिन्दी", englishDe
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "मानक हिन्दी", englishDe
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "मानक हिन्दी", englishDe
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "मानक हिन्दी", englishDe
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "मानक हिन्दी", englishDe
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "मानक हिन्दी", englishDe
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "मानक हिन्दी", englishDe
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "मानक हिन्दी", englishDe
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/hu.coffee b/app/locale/hu.coffee
index 39967a1c3..f1579fb41 100644
--- a/app/locale/hu.coffee
+++ b/app/locale/hu.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "magyar", englishDescription: "Hungarian", t
     campaign_player_created_description: "...melyekben <a href=\"/contribute#artisan\">Művészi Varázsló</a> társaid ellen kűzdhetsz."
     campaign_classic_algorithms: "Klasszikus Algoritmus"
     campaign_classic_algorithms_description: "... amiben megtanulod a legnépszerűbb számítástudományi algoritmusokat."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Nagyon szépen fejlődsz! Mondd el a szüleidnek, mit tanultál a CodeCombat-ban."
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "magyar", englishDescription: "Hungarian", t
   subscribe:
     comparison_blurb: "Élesítsd képességeid CodeCombat feliratkozással!"
     feature1: "60+ alap pálya, 4 világon át" # {change}
-    feature2: "7 erőteljes <strong>új hős</strong> egyedi képességekkel!"
+    feature2: "7 erőteljes <strong>új hős</strong> egyedi képességekkel!" # {change}
     feature3: "30+ bónusz pálya" # {change}
     feature4: "<strong>3500 bónusz drágakő</strong> minden hónapban!"
     feature5: "Videó oktatóanyagok"
@@ -603,11 +605,11 @@ module.exports = nativeDescription: "magyar", englishDescription: "Hungarian", t
     teacher_subs_2: "hogy megkapja az ingyenes havi előfizetést." # {change}
 #    teacher_subs_3: "to set up your subscription."
     sub_includes_title: "Mit tartalmaz az előfizetés?"
-    sub_includes_1: "A 80+ alap pályán kívül az előfizetéssel rendelkező tanulók az alábbi extrákhoz férnek hozzá:"
+    sub_includes_1: "A 80+ alap pályán kívül az előfizetéssel rendelkező tanulók az alábbi extrákhoz férnek hozzá:" # {change}
     sub_includes_2: "50+ gyakorló pálya" # {change}
     sub_includes_3: "Oktató videók"
     sub_includes_4: "Prémium támogatás emailen"
-    sub_includes_5: "7 új hős egyedi képességekkel"
+    sub_includes_5: "7 új hős egyedi képességekkel" # {change}
     sub_includes_6: "3500 bónusz drágakő minden hónapban"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "magyar", englishDescription: "Hungarian", t
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "magyar", englishDescription: "Hungarian", t
     level_tab_thangs_all: "Mind"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "magyar", englishDescription: "Hungarian", t
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "magyar", englishDescription: "Hungarian", t
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/id.coffee b/app/locale/id.coffee
index 07afdacb6..5352a4928 100644
--- a/app/locale/id.coffee
+++ b/app/locale/id.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Bahasa Indonesia", englishDescription: "Ind
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Bahasa Indonesia", englishDescription: "Ind
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Bahasa Indonesia", englishDescription: "Ind
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Bahasa Indonesia", englishDescription: "Ind
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Bahasa Indonesia", englishDescription: "Ind
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Bahasa Indonesia", englishDescription: "Ind
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Bahasa Indonesia", englishDescription: "Ind
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Bahasa Indonesia", englishDescription: "Ind
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/it.coffee b/app/locale/it.coffee
index 4d3fc851b..51ebf03e9 100644
--- a/app/locale/it.coffee
+++ b/app/locale/it.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Italiano", englishDescription: "Italian", t
     campaign_player_created_description: "... nei quali affronterai la creatività dei tuoi compagni <a href=\"/contribute#artisan\">Stregoni Artigiani</a>."
     campaign_classic_algorithms: "Algoritmi classici"
     campaign_classic_algorithms_description: "... in cui impari i più comuni algoritmi dell'informatica."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Stai facendo grandi progressi! Dì ai tuoi genitori quanto hai imparato con CodeCombat."
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "Italiano", englishDescription: "Italian", t
   subscribe:
     comparison_blurb: "Aumenta le tue competenze con un abbonamento a CodeCombat!"
     feature1: "80+ livelli base in 4 mondi" # {change}
-    feature2: "7 potenti <strong>nuovi eroi</strong> con capacità uniche!"
+    feature2: "7 potenti <strong>nuovi eroi</strong> con capacità uniche!" # {change}
     feature3: "50+ livelli bonus" # {change}
     feature4: "<strong>3500 gemme bonus</strong> ogni mese!"
     feature5: "Video tutorial"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Italiano", englishDescription: "Italian", t
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Italiano", englishDescription: "Italian", t
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Italiano", englishDescription: "Italian", t
     make_private: "Rendi clan privato"
     subs_only: "solo per abbonati"
     create_clan: "Crea nuovo clan"
+#    private_preview: "Preview"
     public_clans: "Clan pubblici"
     my_clans: "I miei clan"
     clan_name: "Nome clan"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Italiano", englishDescription: "Italian", t
     level_tab_thangs_all: "Tutti"
     level_tab_thangs_conditions: "Condizioni iniziali"
     level_tab_thangs_add: "Aggiungi thang"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "Aggiungi Componenti"
     component_configs: "Configurazioni componenti"
     config_thang: "Doppio click per configurare un thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Italiano", englishDescription: "Italian", t
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Italiano", englishDescription: "Italian", t
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/ja.coffee b/app/locale/ja.coffee
index 91892ab03..61336e0e8 100644
--- a/app/locale/ja.coffee
+++ b/app/locale/ja.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "日本語", englishDescription: "Japanese",
     campaign_player_created_description: "仲間のウィザード達の創造力との戦いに立ち向かいます"
     campaign_classic_algorithms: "クラシックアルゴリズム"
     campaign_classic_algorithms_description: "コンピュータサイエンスで最も人気のあるアルゴリズムを学ぼう"
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "あなたは進歩している！ CodeCombatでどんなに学んだかについて、誰かに伝えてください。"
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "日本語", englishDescription: "Japanese",
 
   subscribe:
     comparison_blurb: "CodeCombatへ課金してスキルを磨きましょう！"
-    feature1: "80以上の基本レベルが４つの世界に"
-    feature2: "７人のパワフルな <strong>ニューヒーロー</strong> とユニークなスキル!"
-    feature3: "60以上のボーナスレベル"
+    feature1: "80以上の基本レベルが４つの世界に" # {change}
+    feature2: "７人のパワフルな <strong>ニューヒーロー</strong> とユニークなスキル!" # {change}
+    feature3: "60以上のボーナスレベル" # {change}
     feature4: "<strong>3500のジェム</strong>が毎月ボーナス!"
     feature5: "ビデオチュートリアル"
     feature6: "プレミアムメールサポート"
@@ -603,11 +605,11 @@ module.exports = nativeDescription: "日本語", englishDescription: "Japanese",
     teacher_subs_2: "に連絡して無料の月々のサブスクリプションを得ましょう。" # {change}
 #    teacher_subs_3: "to set up your subscription."
     sub_includes_title: "サブスクリプションの内容について"
-    sub_includes_1: "80以上の基本レベルに加えて、生徒は月々のサブスクリプションを得て次の機能が使えます:"
-    sub_includes_2: "60以上の練習レベル"
+    sub_includes_1: "80以上の基本レベルに加えて、生徒は月々のサブスクリプションを得て次の機能が使えます:" # {change}
+    sub_includes_2: "60以上の練習レベル" # {change}
     sub_includes_3: "ビデオチュートリアル"
     sub_includes_4: "メールによるサポート"
-    sub_includes_5: "7人の新しいヒーローとマスターのユニークなスキル"
+    sub_includes_5: "7人の新しいヒーローとマスターのユニークなスキル" # {change}
     sub_includes_6: "3500のジェムが月々支給されます"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,7 +625,7 @@ module.exports = nativeDescription: "日本語", englishDescription: "Japanese",
     who_for_1: "私たちは CodeCombat を9歳以上の生徒にオススメしています。プログラミングの経験は必要ありません。"
     who_for_2: "私たちは男女問わず遊べるように CodeCombat をデザインしました。"
     material_title: "どのぐらいコンテンツがありますか？"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
     material_1: "8時間ほどの無料のコンテンツに加え、サブスクリプションによってさらに14時間ほどプレイすることができ、毎週5つの新しいレベルが追加されています。" # {change}
     concepts_title: "どのような概念がカバーされているかについて"
     how_much_title: "月々のサブスクリプションはいくらですか？"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "日本語", englishDescription: "Japanese",
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "日本語", englishDescription: "Japanese",
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "日本語", englishDescription: "Japanese",
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "日本語", englishDescription: "Japanese",
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/ko.coffee b/app/locale/ko.coffee
index 5796854bd..891d76adb 100644
--- a/app/locale/ko.coffee
+++ b/app/locale/ko.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "한국어", englishDescription: "Korean", t
     campaign_player_created_description: "... 당신 동료가 고안한 레벨에 도전하세요 <a href=\"/contributeartisan\">마법사 장인</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "한국어", englishDescription: "Korean", t
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "한국어", englishDescription: "Korean", t
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "한국어", englishDescription: "Korean", t
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "한국어", englishDescription: "Korean", t
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "한국어", englishDescription: "Korean", t
 #    level_tab_thangs_all: "All"
     level_tab_thangs_conditions: "컨디션 시작"
     level_tab_thangs_add: "Thangs 추가"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "한국어", englishDescription: "Korean", t
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "한국어", englishDescription: "Korean", t
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/lt.coffee b/app/locale/lt.coffee
index 39fd14bb1..89d57d310 100644
--- a/app/locale/lt.coffee
+++ b/app/locale/lt.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "lietuvių kalba", englishDescription: "Lith
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "lietuvių kalba", englishDescription: "Lith
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "lietuvių kalba", englishDescription: "Lith
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "lietuvių kalba", englishDescription: "Lith
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "lietuvių kalba", englishDescription: "Lith
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "lietuvių kalba", englishDescription: "Lith
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "lietuvių kalba", englishDescription: "Lith
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "lietuvių kalba", englishDescription: "Lith
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/mk-MK.coffee b/app/locale/mk-MK.coffee
index e396d616d..8d1f1c444 100644
--- a/app/locale/mk-MK.coffee
+++ b/app/locale/mk-MK.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Македонски", englishDescription:
     campaign_player_created_description: "... се бориш наспроти креативноста на останатите играчи од <a href=\"/contribute/artisan\">Волшебничкиот занает</a>."
     campaign_classic_algorithms: "Класични алгоритми"
     campaign_classic_algorithms_description: "... во кои ги учиш најпопуларните алгоритми во компјутерската наука."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Одлично напредуваш! Кажи му на родителот колку имаш научено со CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Македонски", englishDescription:
 
   subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Македонски", englishDescription:
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Македонски", englishDescription:
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Македонски", englishDescription:
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Македонски", englishDescription:
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Македонски", englishDescription:
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Македонски", englishDescription:
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/ms.coffee b/app/locale/ms.coffee
index 090c79096..900d0f7fe 100644
--- a/app/locale/ms.coffee
+++ b/app/locale/ms.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Bahasa Melayu", englishDescription: "Bahasa
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Bahasa Melayu", englishDescription: "Bahasa
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Bahasa Melayu", englishDescription: "Bahasa
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Bahasa Melayu", englishDescription: "Bahasa
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Bahasa Melayu", englishDescription: "Bahasa
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Bahasa Melayu", englishDescription: "Bahasa
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Bahasa Melayu", englishDescription: "Bahasa
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Bahasa Melayu", englishDescription: "Bahasa
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/nb.coffee b/app/locale/nb.coffee
index 5c103985e..3e66c43f3 100644
--- a/app/locale/nb.coffee
+++ b/app/locale/nb.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Norsk Bokmål", englishDescription: "Norweg
     campaign_player_created_description: "... hvor du kjemper mot kreativiteten til en av dine medspillende <a href=\"/contribute#artisan\">Artisan Trollmenn</a>."
     campaign_classic_algorithms: "Klassiske algoritmer"
     campaign_classic_algorithms_description: "... hvor du lærer noen av de mest populære algoritmene innen programmering"
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Du gjør fantastisk fremgang! Fortell noen hvor mye du har lært gjennom CodeCombat."
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "Norsk Bokmål", englishDescription: "Norweg
   subscribe:
     comparison_blurb: "Spiss dine kunnskaper med et CodeCombat abonnement!"
     feature1: "60+ grunnleggende brett fordelt på 4 verdener" # {change}
-    feature2: "7 kraftfulle <strong>nye helter</strong> med unike ferdigheter!"
+    feature2: "7 kraftfulle <strong>nye helter</strong> med unike ferdigheter!" # {change}
     feature3: "30+ bonusbrett" # {change}
     feature4: "<strong>3500 bonusjuveler</strong> hver måned!"
     feature5: "Videoveiledninger"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Norsk Bokmål", englishDescription: "Norweg
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Norsk Bokmål", englishDescription: "Norweg
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Norsk Bokmål", englishDescription: "Norweg
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Norsk Bokmål", englishDescription: "Norweg
     level_tab_thangs_all: "Alle"
     level_tab_thangs_conditions: "Utgangsforhold"
     level_tab_thangs_add: "Legg til Thangs"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "Legg til komponenter"
     component_configs: "Komponentoppsett"
     config_thang: "Dobbeltklikk for å konfigurere en thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Norsk Bokmål", englishDescription: "Norweg
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Norsk Bokmål", englishDescription: "Norweg
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "Opprettet"
diff --git a/app/locale/nl-BE.coffee b/app/locale/nl-BE.coffee
index 97b2d8564..bff5e1967 100644
--- a/app/locale/nl-BE.coffee
+++ b/app/locale/nl-BE.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Nederlands (België)", englishDescription:
     campaign_player_created_description: "... waarin je ten strijde trekt tegen de creativiteit van andere <a href=\"/contribute#artisan\">Ambachtelijke Tovenaars</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Nederlands (België)", englishDescription:
 
   subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Nederlands (België)", englishDescription:
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Nederlands (België)", englishDescription:
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Nederlands (België)", englishDescription:
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Nederlands (België)", englishDescription:
     level_tab_thangs_all: "Alles"
     level_tab_thangs_conditions: "Start Condities"
     level_tab_thangs_add: "Voeg element toe"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Nederlands (België)", englishDescription:
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Nederlands (België)", englishDescription:
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/nl-NL.coffee b/app/locale/nl-NL.coffee
index f3b09daa1..be478fbe2 100644
--- a/app/locale/nl-NL.coffee
+++ b/app/locale/nl-NL.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Nederlands (Nederland)", englishDescription
     campaign_player_created_description: "... waarin je ten strijde trekt tegen de creativiteit van andere <a href=\"/contribute#artisan\">Ambachtelijke Tovenaars</a>."
     campaign_classic_algorithms: "Klassieke Algorithmes"
     campaign_classic_algorithms_description: "... Waarin je de meest populaire algorithmes van de informatica leert."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Nederlands (Nederland)", englishDescription
 
   subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Nederlands (Nederland)", englishDescription
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Nederlands (Nederland)", englishDescription
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Nederlands (Nederland)", englishDescription
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Nederlands (Nederland)", englishDescription
     level_tab_thangs_all: "Alles"
     level_tab_thangs_conditions: "Start Condities"
     level_tab_thangs_add: "Voeg element toe"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "Voeg Componenten Toe"
     component_configs: "Componenten Configuraties"
     config_thang: "Double click om een thang te configureren"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Nederlands (Nederland)", englishDescription
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Nederlands (Nederland)", englishDescription
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/nn.coffee b/app/locale/nn.coffee
index b6eb4f51a..3faf20b6c 100644
--- a/app/locale/nn.coffee
+++ b/app/locale/nn.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Norsk Nynorsk", englishDescription: "Norweg
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Norsk Nynorsk", englishDescription: "Norweg
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Norsk Nynorsk", englishDescription: "Norweg
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Norsk Nynorsk", englishDescription: "Norweg
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Norsk Nynorsk", englishDescription: "Norweg
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Norsk Nynorsk", englishDescription: "Norweg
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Norsk Nynorsk", englishDescription: "Norweg
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Norsk Nynorsk", englishDescription: "Norweg
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/pl.coffee b/app/locale/pl.coffee
index 00cbc4fe3..381b1c3c4 100644
--- a/app/locale/pl.coffee
+++ b/app/locale/pl.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "polski", englishDescription: "Polish", tran
     campaign_player_created_description: "... w których walczysz przeciwko dziełom <a href=\"/contribute#artisan\">Czarodziejów Rzemieślników</a>"
     campaign_classic_algorithms: "Algorytmy klasyczne"
     campaign_classic_algorithms_description: "... gdzie nauczysz się najpopularniejszych alogrytmów w Informatyce."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "polski", englishDescription: "Polish", tran
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "polski", englishDescription: "Polish", tran
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "polski", englishDescription: "Polish", tran
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "polski", englishDescription: "Polish", tran
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "polski", englishDescription: "Polish", tran
     level_tab_thangs_all: "Wszystkie"
     level_tab_thangs_conditions: "Warunki początkowe"
     level_tab_thangs_add: "Dodaj obiekty"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "polski", englishDescription: "Polish", tran
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "polski", englishDescription: "Polish", tran
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "Dodano"
diff --git a/app/locale/pt-BR.coffee b/app/locale/pt-BR.coffee
index a79a2dda1..f667a5608 100644
--- a/app/locale/pt-BR.coffee
+++ b/app/locale/pt-BR.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Português do Brasil", englishDescription:
     campaign_player_created_description: "... nos quais você batalhará contra a criatividade dos seus companheiros <a href=\"/contribute#artisan\">feiticeiros Artesãos</a>."
     campaign_classic_algorithms: "Algoritmos Clássicos"
     campaign_classic_algorithms_description: "...onde você aprende os algoritmos mais conhecidos em Ciência da Computação."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Você está fazendo um grande progresso! Diga a alguém o quão você aprendeu com o CodeCombat." # {change}
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "Português do Brasil", englishDescription:
   subscribe:
     comparison_blurb: "Afine suas habilidades com uma assinatura CodeCombat!"
     feature1: "Mais de 60 níveis básicos entre 4 mundos" # {change}
-    feature2: "7 poderosos <strong>novos heróis</strong> com habilidades únicas!"
+    feature2: "7 poderosos <strong>novos heróis</strong> com habilidades únicas!" # {change}
     feature3: "Mais de 30 níveis bônus" # {change}
     feature4: "<strong>3500 gemas bônus</strong> todo mês!"
     feature5: "Vídeo tutorials"
@@ -603,11 +605,11 @@ module.exports = nativeDescription: "Português do Brasil", englishDescription:
     teacher_subs_2: "para organizar uma assinatura mensal." # {change}
 #    teacher_subs_3: "to set up your subscription."
     sub_includes_title: "O que está incluído na assinatura?"
-    sub_includes_1: "Além dos mais de 80 níveis básicos, estudantes com uma assinatura mensal têm acesso aos seguintes recursos:"
-    sub_includes_2: "Mais de 60 níveis para praticar"
+    sub_includes_1: "Além dos mais de 80 níveis básicos, estudantes com uma assinatura mensal têm acesso aos seguintes recursos:" # {change}
+    sub_includes_2: "Mais de 60 níveis para praticar" # {change}
     sub_includes_3: "Vídeos tutoriais"
     sub_includes_4: "Suporte premium por email"
-    sub_includes_5: "7 novos heróis com habilidades únicas a serem aprendidas"
+    sub_includes_5: "7 novos heróis com habilidades únicas a serem aprendidas" # {change}
     sub_includes_6: "3500 gemas bônus todos os meses"
     sub_includes_7: "Clãs Privados"
     monitor_progress_title: "Como monitoro o progresso dos estudantes?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Português do Brasil", englishDescription:
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Português do Brasil", englishDescription:
     make_private: "Tornar o clã privado"
     subs_only: "Apenas para assinantes"
     create_clan: "Criar novo clã"
+#    private_preview: "Preview"
     public_clans: "Clãs Públicos"
     my_clans: "Meus Clãs"
     clan_name: "Nome do Clã"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Português do Brasil", englishDescription:
     level_tab_thangs_all: "Tudo"
     level_tab_thangs_conditions: "Condições de Início"
     level_tab_thangs_add: "Adicionar Thangs"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "Adicionar componentes"
     component_configs: "Configurações de componente"
     config_thang: "Duplo-clique para configurar uma thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Português do Brasil", englishDescription:
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Português do Brasil", englishDescription:
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "Adicionado"
diff --git a/app/locale/pt-PT.coffee b/app/locale/pt-PT.coffee
index c4a82f74b..4bdd3f14a 100644
--- a/app/locale/pt-PT.coffee
+++ b/app/locale/pt-PT.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Português (Portugal)", englishDescription:
     campaign_player_created_description: "... onde combates contra a criatividade dos teus colegas <a href=\"/contribute/artisan\">Feiticeiros Artesãos</a>."
     campaign_classic_algorithms: "Algoritmos Clássicos"
     campaign_classic_algorithms_description: "... onde aprendes os algoritmos mais populares da Ciência da Computação."
+    campaign_old_multiplayer: "(Obsoletas) Arenas Multijogador Antigas"
+    campaign_old_multiplayer_description: "Relíquias de uma idade mais civilizada. Não há simulações em curso para estas arenas multijogador, mais antigas e sem heróis."
 
   share_progress_modal:
     blurb: "Estás a fazer grandes progressos! Conta ao teu educador o quanto aprendeste com o CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Português (Portugal)", englishDescription:
 
   subscribe:
     comparison_blurb: "Aperfeiçoa as tuas habilidades com uma subscrição do CodeCombat!"
-    feature1: "80+ níveis básicos dispersos por 4 mundos"
-    feature2: "7 <strong>heróis novos</strong> e poderosos com habilidades únicas!"
-    feature3: "60+ níveis de bónus"
+    feature1: "100+ níveis básicos dispersos por 4 mundos"
+    feature2: "10 <strong>heróis novos</strong> e poderosos com habilidades únicas!"
+    feature3: "70+ níveis de bónus"
     feature4: "<strong>3500 gemas de bónus</strong> por mês!"
     feature5: "Tutoriais em vídeo"
     feature6: "Apoio por e-mail superior"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Português (Portugal)", englishDescription:
     intro_2: "Não é necessário ter experiência!"
     free_title: "Quanto custa?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-    free_1: "Há 80+ níveis GRATUITOS que abordam cada conceito."
+    free_1: "Há 100+ níveis GRATUITOS que abordam cada conceito."
     free_2: "Uma subscrição mensal garante acesso a tutoriais em vídeo e a níveis extra para praticar."
     teacher_subs_title: "Os professores recebem uma subscrição gratuita!"
     teacher_subs_1: "Por favor, preenche o nosso"
     teacher_subs_2: "Inquérito para Professores"
     teacher_subs_3: "para configurares a tua subscrição."
     sub_includes_title: "O que está incluído na subscrição?"
-    sub_includes_1: "Para além dos 80+ níveis básicos, os estudantes com uma subscrição mensal têm acesso às seguintes funcionalidades adicionais:"
-    sub_includes_2: "60+ níveis para praticar"
+    sub_includes_1: "Para além dos 100+ níveis básicos, os estudantes com uma subscrição mensal têm acesso às seguintes funcionalidades adicionais:"
+    sub_includes_2: "70+ níveis para praticar"
     sub_includes_3: "Tutoriais em vídeo"
     sub_includes_4: "Suporte por e-mail prioritário"
-    sub_includes_5: "7 novos heróis com habilidades únicas para dominar"
+    sub_includes_5: "10 novos heróis com habilidades únicas para dominar"
     sub_includes_6: "3500 gemas de bónus todos os meses"
     sub_includes_7: "Clãs Privados"
     monitor_progress_title: "Como é que acompanho o progresso dos estudantes?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Português (Portugal)", englishDescription:
     who_for_1: "Recomendamos o CodeCombat para estudantes com idade superior a 9. Não é necessária nenhuma experiência de programação prévia."
     who_for_2: "O CodeCombat foi pensado de forma a ser apelativo tanto para rapazes como para raparigas."
     material_title: "Quanto material há?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
     concepts_title: "Que conceitos são abordados?"
     how_much_title: "Quanto custa uma subscrição mensal?"
     how_much_1: "Uma"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Português (Portugal)", englishDescription:
     make_private: "Tornar o clã privado"
     subs_only: "apenas para subscritores"
     create_clan: "Criar um Novo Clã"
+    private_preview: "Pré-visualização"
     public_clans: "Clãs Públicos"
     my_clans: "Os Meus Clãs"
     clan_name: "Nome do Clã"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Português (Portugal)", englishDescription:
     level_tab_thangs_all: "Todos"
     level_tab_thangs_conditions: "Condições Iniciais"
     level_tab_thangs_add: "Adicionar Thangs"
+    level_tab_thangs_search: "Pesquisar thangs"
     add_components: "Adicionar Componentes"
     component_configs: "Configurações dos Componentes"
     config_thang: "Clica duas vezes para configurares uma thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Português (Portugal)", englishDescription:
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Português (Portugal)", englishDescription:
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "Adicionados/as"
diff --git a/app/locale/ro.coffee b/app/locale/ro.coffee
index 3e8fd9e29..102de0df3 100644
--- a/app/locale/ro.coffee
+++ b/app/locale/ro.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
     campaign_player_created_description: "... în care ai ocazia să testezi creativitatea colegilor tai <a href=\"/contribute#artisan\">Artisan Wizards</a>."
     campaign_classic_algorithms: "Algoritmi clasici"
     campaign_classic_algorithms_description: "... în care înveți cei mai populari algoritmi în informatică."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Faci progrese mari! Spune-le părinților cât de mult ai învățat cu CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
 
   subscribe:
     comparison_blurb: "Îmbunătățeșteți abilitățile cu abonamentul CodeCombat"
-    feature1: "80+ de nivele de bază în 4 lumi diferite!"
-    feature2: "7 <strong>Eroi Noi</strong> puternici, cu skilluri unice!"
-    feature3: "60+ nivele bonus"
+    feature1: "80+ de nivele de bază în 4 lumi diferite!" # {change}
+    feature2: "7 <strong>Eroi Noi</strong> puternici, cu skilluri unice!" # {change}
+    feature3: "60+ nivele bonus" # {change}
     feature4: "<strong>3500 de Pietre Prețioase bonus</strong> în fiecare lună!"
     feature5: "Tutoriale Video"
     feature6: "Suport e-mail premium"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
     intro_2: "Nu este nevoie de experiența în domeniu!"
     free_title: "Cât de mult costă?"
     cost_china: "CodeCombat în China este gratis pentru primele 5 nivele, după care costă $9.99 USD pe lună pentru a accesa celelalte 140+ nivele pe serverele noaste exlusive din China."
-    free_1: "Sunt 80+ de nivele GRATIS ce parcurg fiecare concept în programare."
+    free_1: "Sunt 80+ de nivele GRATIS ce parcurg fiecare concept în programare." # {change}
     free_2: "Un abonament lunar oferă acces la tutoriale video si nivele extra pentru practică."
     teacher_subs_title: "Educatori primesc abonamente gratuite!"
     teacher_subs_1: "Te rugăm sa completezi"
     teacher_subs_2: "Chestionarul Educatorului"
     teacher_subs_3: "pentru a configura abonamentul."
     sub_includes_title: "Ce e inclus în abonament?"
-    sub_includes_1: "Pe langă 80+ de nivele de bază, studenții cu un abonament lunar au acces la aceste servicii suplimentare:"
-    sub_includes_2: "60+ nivele pentru practică"
+    sub_includes_1: "Pe langă 80+ de nivele de bază, studenții cu un abonament lunar au acces la aceste servicii suplimentare:" # {change}
+    sub_includes_2: "60+ nivele pentru practică" # {change}
     sub_includes_3: "Tutoriale Video"
     sub_includes_4: "Suport pe e-mail premium"
-    sub_includes_5: "7 eroi noi cu abilități unice de stăpânit"
+    sub_includes_5: "7 eroi noi cu abilități unice de stăpânit" # {change}
     sub_includes_6: "3500 de Pietre Prețioase bonus in fiecare lună"
     sub_includes_7: "Clanuri Private"
     monitor_progress_title: "Cum monitorizez progresul unui student?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
     who_for_1: "Recomandăm CodeCombat pentru studenți cu vârsta de la 9 ani în sus. Nu este nevoie de experiență de programare."
     who_for_2: "Am proiectat CodeCombat pentru a atrage atât băieți cat si fete."
     material_title: "Cât de mult material conține?"
-    material_china: "Aproximativ 30 de ore de gameplay răspândite peste 140+ de nivele pentru abonați, si nivele noi în fiecare săptămână."
-    material_1: "Aproximativ 10 ore de material gratis si adițional 20 de ore în plus pentru abonați, cu nivele noi în fiecare săptămână."
+    material_china: "Aproximativ 30 de ore de gameplay răspândite peste 140+ de nivele pentru abonați, si nivele noi în fiecare săptămână." # {change}
+    material_1: "Aproximativ 10 ore de material gratis si adițional 20 de ore în plus pentru abonați, cu nivele noi în fiecare săptămână." # {change}
     concepts_title: "Ce concepte sunt parcurse?"
     how_much_title: "Cât de mult costă un abonament lunar?"
     how_much_1: "Un"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
     make_private: "Fă clanul privat"
     subs_only: "numai abonați"
     create_clan: "Creează un clan Nou"
+#    private_preview: "Preview"
     public_clans: "Clanuri Publice"
     my_clans: "Clanurile mele"
     clan_name: "Numele Clanului"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
     level_tab_thangs_all: "Toate"
     level_tab_thangs_conditions: "Condiți inițiale"
     level_tab_thangs_add: "Adaugă Thangs"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "Adaugă Componente"
     component_configs: "Configurarea Componentelor"
     config_thang: "Dublu click pentru a configura un thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "Adăugat"
diff --git a/app/locale/ru.coffee b/app/locale/ru.coffee
index 3e5cb8a5a..98b6796c4 100644
--- a/app/locale/ru.coffee
+++ b/app/locale/ru.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "русский", englishDescription: "Russi
     campaign_player_created_description: "... в которых вы сражаетесь с креативностью ваших друзей <a href=\"/contribute#artisan\">Ремесленников</a>."
     campaign_classic_algorithms: "Классические принципы"
     campaign_classic_algorithms_description: "... которые чаще всего встречаются в компьютерных науках."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Вы отлично продвигаетесь! Расскажите своим родителям, как много вы уже выучили с CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "русский", englishDescription: "Russi
 
   subscribe:
     comparison_blurb: "Отточите свое мастерство благодаря подписке на CodeCombat!"
-    feature1: "80+ основных уровней на просторах 4-х миров"
-    feature2: "7 могущественных <strong>новых героев</strong> с уникальными способностями!"
-    feature3: "60+ дополнительных уровней"
+    feature1: "80+ основных уровней на просторах 4-х миров" # {change}
+    feature2: "7 могущественных <strong>новых героев</strong> с уникальными способностями!" # {change}
+    feature3: "60+ дополнительных уровней" # {change}
     feature4: "<strong>3500 бонусных самоцветов</strong> каждый месяц!"
     feature5: "Обучающие видеоролики"
     feature6: "Эксклюзивная поддержка по электронной почте"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "русский", englishDescription: "Russi
     intro_2: "Опыт не обязателен!"
     free_title: "Сколько это стоит?"
     cost_china: "Первые 5 уровней CodeCombat бесплатны в Китае. При оплате $9.99 в месяц вы получите доступ к последующим более чем 140 уровням на наших эксклюзивных серверах в Китае."
-    free_1: "В наличии более 80 БЕСПЛАТНЫХ уровней, которые покрывают каждый концепт."
+    free_1: "В наличии более 80 БЕСПЛАТНЫХ уровней, которые покрывают каждый концепт." # {change}
     free_2: "Месячная подписка предоставляет доступ к видео-урокам и дополнительным уровням."
     teacher_subs_title: "Учителя получают бесплатные подписки!"
     teacher_subs_1: "Пожалуйста, заполните нашу"
     teacher_subs_2: "Анкету учителя"
     teacher_subs_3: "для настройки вашей подписки."
     sub_includes_title: "Что включено в подписку?"
-    sub_includes_1: "В дополнение к более чем 80 бесплатным уровням ученики с месячной подпиской получат доступ к дополнительным возможностям:"
-    sub_includes_2: "Более 60 уровней для дополнительной практики"
+    sub_includes_1: "В дополнение к более чем 80 бесплатным уровням ученики с месячной подпиской получат доступ к дополнительным возможностям:" # {change}
+    sub_includes_2: "Более 60 уровней для дополнительной практики" # {change}
     sub_includes_3: "Видео-уроки"
     sub_includes_4: "Эксклюзивная поддержка по электронной почте"
-    sub_includes_5: "7 новых героев с уникальными возможностями для оттачивания мастерства"
+    sub_includes_5: "7 новых героев с уникальными возможностями для оттачивания мастерства" # {change}
     sub_includes_6: "3500 бонусных самоцветов каждый месяц"
     sub_includes_7: "Частные Кланы"
     monitor_progress_title: "Как мне следить за прогрессом студентов?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "русский", englishDescription: "Russi
     who_for_1: "Мы рекомендуем CodeCombat для учеников старше 9 лет. Какой-либо опыт программирования не требуется."
     who_for_2: "Мы разработали CodeCombat так, чтобы он подходил и мальчикам и девочкам."
     material_title: "Как много здесь материала?"
-    material_china: "Около 30 часов игрового процесса, распределенного более чем на 140 уровней для подписчиков с добавлением новых уровней каждую неделю."
-    material_1: "Около 10 часов бесплатного контента и 20 часов дополнительного контента для подписчиков с добавлением новых уровней каждую неделю."
+    material_china: "Около 30 часов игрового процесса, распределенного более чем на 140 уровней для подписчиков с добавлением новых уровней каждую неделю." # {change}
+    material_1: "Около 10 часов бесплатного контента и 20 часов дополнительного контента для подписчиков с добавлением новых уровней каждую неделю." # {change}
     concepts_title: "О каких концептах мы рассказываем?"
     how_much_title: "Сколько стоит месячная подписка?"
     how_much_1: "Цена"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "русский", englishDescription: "Russi
     make_private: "Сделать клан частным"
     subs_only: "только для подписчиков"
     create_clan: "Создать новый клан"
+#    private_preview: "Preview"
     public_clans: "Публичные кланы"
     my_clans: "Мои кланы"
     clan_name: "Имя клана"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "русский", englishDescription: "Russi
     level_tab_thangs_all: "Все"
     level_tab_thangs_conditions: "Начальные условия"
     level_tab_thangs_add: "Добавить объект"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "Добавить компоненты"
     component_configs: "Конфигурации компонентов"
     config_thang: "Двойной клик для конфигурирования объектов"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "русский", englishDescription: "Russi
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "русский", englishDescription: "Russi
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "Добавлено"
diff --git a/app/locale/sk.coffee b/app/locale/sk.coffee
index 67aa3b52c..c2912f70f 100644
--- a/app/locale/sk.coffee
+++ b/app/locale/sk.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "slovenčina", englishDescription: "Slovak",
     campaign_player_created_description: "... v ktorých sa popasuješ s kreativitou svojich <a href=\"/contribute#artisan\">kúzelníckych súdruhov</a>."
     campaign_classic_algorithms: "Klasické Algoritmy"
     campaign_classic_algorithms_description: "... v kterých sa naučíte najobľúbenejšie algoritmy v IT"
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Postupuješ míľovými krokmi ! Povedz kamarátom, čo si sa už naučil pomocou CodeCombatu."
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "slovenčina", englishDescription: "Slovak",
   subscribe:
     comparison_blurb: "Uč sa dôkladnejšie vďaka predplatnému !"
     feature1: "60+ základných úrovní v štyroch svetoch" # {change}
-    feature2: "7 mocných <strong>new hrdinov</strong> s jedinečnými schopnosťami!"
+    feature2: "7 mocných <strong>new hrdinov</strong> s jedinečnými schopnosťami!" # {change}
     feature3: "30+ bonusových úrovní" # {change}
     feature4: "<strong>3500 bonusových diamantov</strong> každý mesiac !"
     feature5: "Video tutoriály"
@@ -607,7 +609,7 @@ module.exports = nativeDescription: "slovenčina", englishDescription: "Slovak",
     sub_includes_2: "40+ tréningových úrovní" # {change}
     sub_includes_3: "Video návody"
     sub_includes_4: "Prémiovú emailovú podporu"
-    sub_includes_5: "7 nových hrdinov s jedinečnými schopnosťami"
+    sub_includes_5: "7 nových hrdinov s jedinečnými schopnosťami" # {change}
     sub_includes_6: "3500 bonusových diamantov každý mesiac"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,7 +625,7 @@ module.exports = nativeDescription: "slovenčina", englishDescription: "Slovak",
     who_for_1: "CodeCombat odporúčame pre žiakov od 9 rokov. Nie sú nutné žiadne predchádzajúce skúsenosti s programovaním."
     who_for_2: "CodeCombat sme navrhli tak, aby oslovil chlapcov aj dievčatá."
     material_title: "Aký je objem učebnej látky ?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
     material_1: "Asi 8 hodín bezplatného obsahu a ďalších 14 hodín pre predplatiteľov. 5 nových úrovní každý týždeň." # {change}
     concepts_title: "Aké pojmy sú pokryté ?"
     how_much_title: "Koľko stojí mesačné predplatné ?"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "slovenčina", englishDescription: "Slovak",
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "slovenčina", englishDescription: "Slovak",
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "slovenčina", englishDescription: "Slovak",
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "slovenčina", englishDescription: "Slovak",
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/sl.coffee b/app/locale/sl.coffee
index 6eef7cb70..3332007b8 100644
--- a/app/locale/sl.coffee
+++ b/app/locale/sl.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "slovenščina", englishDescription: "Sloven
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "slovenščina", englishDescription: "Sloven
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "slovenščina", englishDescription: "Sloven
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "slovenščina", englishDescription: "Sloven
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "slovenščina", englishDescription: "Sloven
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "slovenščina", englishDescription: "Sloven
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "slovenščina", englishDescription: "Sloven
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "slovenščina", englishDescription: "Sloven
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/sr.coffee b/app/locale/sr.coffee
index a1419a866..402a31645 100644
--- a/app/locale/sr.coffee
+++ b/app/locale/sr.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "српски", englishDescription: "Serbian
     campaign_player_created_description: "... у којима се бориш против креативности својих колега."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "српски", englishDescription: "Serbian
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "српски", englishDescription: "Serbian
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "српски", englishDescription: "Serbian
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "српски", englishDescription: "Serbian
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "српски", englishDescription: "Serbian
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "српски", englishDescription: "Serbian
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "српски", englishDescription: "Serbian
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/sv.coffee b/app/locale/sv.coffee
index 7b2e48046..b4f396951 100644
--- a/app/locale/sv.coffee
+++ b/app/locale/sv.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Svenska", englishDescription: "Swedish", tr
     campaign_player_created_description: "... i vilken du tävlar mot kreativiteten hos  andra <a href=\"/contribute#artisan\">Hantverkare</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Svenska", englishDescription: "Swedish", tr
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -603,11 +605,11 @@ module.exports = nativeDescription: "Svenska", englishDescription: "Swedish", tr
     teacher_subs_2: "för att sätta upp en gratis månadsprenumeration." # {change}
 #    teacher_subs_3: "to set up your subscription."
     sub_includes_title: "Vad ingår i prenumerationen?"
-    sub_includes_1: "Förutom de 80+ grundläggande nivåerna får elever med en månadsprenumeration tillgång till följande:"
-    sub_includes_2: "60+ övningsnivåer"
+    sub_includes_1: "Förutom de 80+ grundläggande nivåerna får elever med en månadsprenumeration tillgång till följande:" # {change}
+    sub_includes_2: "60+ övningsnivåer" # {change}
     sub_includes_3: "Videogenomgångar"
     sub_includes_4: "Premium mejlsupport"
-    sub_includes_5: "7 nya hjältar med unika färdigheter att bemästra"
+    sub_includes_5: "7 nya hjältar med unika färdigheter att bemästra" # {change}
     sub_includes_6: "3500 bonusädelstenar varje månad"
     sub_includes_7: "Privata klaner"
     monitor_progress_title: "Hur kan jag se elevernas framsteg?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Svenska", englishDescription: "Swedish", tr
     who_for_1: "Vi rekommenderar CodeCombat till elever som är minst 9 år. Inga programmeringskunskaper krävs."
     who_for_2: "Vi har skapat CodeCombat för att locka både pojkar och flickor."
     material_title: "Hur mycket material finns det?"
-    material_china: "Ungefär 30 timmars speltid över 140+ prenumerantnivåer - än så länge - med nya nivåer varje vecka."
-    material_1: "Ungefär 10 timmar fritt innehåll och ytterligare 20 timmar prenumerantinnehåll med nya nivåer varje vecka."
+    material_china: "Ungefär 30 timmars speltid över 140+ prenumerantnivåer - än så länge - med nya nivåer varje vecka." # {change}
+    material_1: "Ungefär 10 timmar fritt innehåll och ytterligare 20 timmar prenumerantinnehåll med nya nivåer varje vecka." # {change}
     concepts_title: "Vilka koncept täcks?"
     how_much_title: "Hur mycket kostar en månadsprenumeration?"
     how_much_1: "En"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Svenska", englishDescription: "Swedish", tr
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Svenska", englishDescription: "Swedish", tr
 #    level_tab_thangs_all: "All"
     level_tab_thangs_conditions: "Startvillkor"
     level_tab_thangs_add: "Lägg till enheter"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Svenska", englishDescription: "Swedish", tr
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Svenska", englishDescription: "Swedish", tr
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
 #    added: "Added"
diff --git a/app/locale/th.coffee b/app/locale/th.coffee
index f96958234..31493ae99 100644
--- a/app/locale/th.coffee
+++ b/app/locale/th.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "ไทย", englishDescription: "Thai", tra
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "ไทย", englishDescription: "Thai", tra
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "ไทย", englishDescription: "Thai", tra
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "ไทย", englishDescription: "Thai", tra
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "ไทย", englishDescription: "Thai", tra
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "ไทย", englishDescription: "Thai", tra
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "ไทย", englishDescription: "Thai", tra
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "ไทย", englishDescription: "Thai", tra
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/tr.coffee b/app/locale/tr.coffee
index 339dc1187..96ec41bee 100644
--- a/app/locale/tr.coffee
+++ b/app/locale/tr.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Türkçe", englishDescription: "Turkish", t
     campaign_player_created_description: "<a href=\"/contribute#artisan\">Zanaatkâr Büyücüler</a>in yaratıcılıklarına karşı mücadele etmek için..."
     campaign_classic_algorithms: "Klasik Algoritmalar"
     campaign_classic_algorithms_description: "... Bilgisayar Bilimleri'nde öğrendiğiniz en yaygın algoritmalar."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Harika iş çıkarıyorsun! Birine CodeCombat ile ne kadar öğrendiğinden bahset."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Türkçe", englishDescription: "Turkish", t
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Türkçe", englishDescription: "Turkish", t
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Türkçe", englishDescription: "Turkish", t
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Türkçe", englishDescription: "Turkish", t
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Türkçe", englishDescription: "Turkish", t
     level_tab_thangs_all: "Tüm"
     level_tab_thangs_conditions: "Başlama Şartları"
     level_tab_thangs_add: "Nesne Ekle"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Türkçe", englishDescription: "Turkish", t
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Türkçe", englishDescription: "Turkish", t
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/uk.coffee b/app/locale/uk.coffee
index 0f42c9687..04b2207f4 100644
--- a/app/locale/uk.coffee
+++ b/app/locale/uk.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Українська", englishDescription:
     campaign_player_created_description: "... у яких Ви змагаєтесь у креативності із Вашими друзями-<a href=\"/contribute#artisan\">Архітекторами</a>."
     campaign_classic_algorithms: "Класичні алгоритми"
     campaign_classic_algorithms_description: "... у яких Ви вивчите найпопулярніші алгоритми комп'ютерних наук."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Ви робите великі успіхи! Розкажіть кому-небудь, як багато ви вивчили з CodeCombat." # {change}
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "Українська", englishDescription:
   subscribe:
     comparison_blurb: "Відточіть свої навички завдяки підписці на CodeCombat!"
     feature1: "Більше 60 основних рівней на просторах 4 світів" # {change}
-    feature2: "7 могутніх <strong>нових героїв</strong> з унікальними здібностями!"
+    feature2: "7 могутніх <strong>нових героїв</strong> з унікальними здібностями!" # {change}
     feature3: "Більше 30 бонусних рівнів" # {change}
     feature4: "<strong>3500 бонусних самоцвітів</strong> кожного місяця!"
     feature5: "Навчальні відеоролики"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Українська", englishDescription:
     intro_2: "Досвід не потрібен!"
     free_title: "Скільки це коштує?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Українська", englishDescription:
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
     how_much_title: "Скільки коштує місячна передплата?"
     how_much_1: ""
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Українська", englishDescription:
     make_private: "Зробити клан приватним"
     subs_only: "лише для підписчиків"
     create_clan: "Створити новий клан"
+#    private_preview: "Preview"
     public_clans: "Публічні клани"
     my_clans: "Мої клани"
     clan_name: "Назва клану"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Українська", englishDescription:
     level_tab_thangs_all: "Усі"
     level_tab_thangs_conditions: "Початковий статус"
     level_tab_thangs_add: "Додати об'єкти"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "Додати коментарі"
     component_configs: "Налаштування компонента"
     config_thang: "Подвійний клік для конфігуровання об'єктів"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Українська", englishDescription:
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Українська", englishDescription:
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "Додано"
diff --git a/app/locale/ur.coffee b/app/locale/ur.coffee
index 8146164f4..2672eaa2a 100644
--- a/app/locale/ur.coffee
+++ b/app/locale/ur.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "اُردُو", englishDescription: "Urdu",
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "اُردُو", englishDescription: "Urdu",
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "اُردُو", englishDescription: "Urdu",
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "اُردُو", englishDescription: "Urdu",
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "اُردُو", englishDescription: "Urdu",
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "اُردُو", englishDescription: "Urdu",
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "اُردُو", englishDescription: "Urdu",
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "اُردُو", englishDescription: "Urdu",
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/uz.coffee b/app/locale/uz.coffee
index 2a5b2c037..c89083359 100644
--- a/app/locale/uz.coffee
+++ b/app/locale/uz.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "O'zbekcha", englishDescription: "Uzbek", tr
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "O'zbekcha", englishDescription: "Uzbek", tr
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "O'zbekcha", englishDescription: "Uzbek", tr
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "O'zbekcha", englishDescription: "Uzbek", tr
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "O'zbekcha", englishDescription: "Uzbek", tr
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "O'zbekcha", englishDescription: "Uzbek", tr
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "O'zbekcha", englishDescription: "Uzbek", tr
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "O'zbekcha", englishDescription: "Uzbek", tr
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/vi.coffee b/app/locale/vi.coffee
index 4fad986cb..33ab90ee8 100644
--- a/app/locale/vi.coffee
+++ b/app/locale/vi.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "Tiếng Việt", englishDescription: "Vietn
     campaign_player_created_description: "... nơi bạn thử thách trí sáng tạo đối với <a href=\"/contribute/artisan\">Pháp Sư Tối Cao</a>."
     campaign_classic_algorithms: "Các thuật toán kinh điển"
     campaign_classic_algorithms_description: "... Nơi mà bạn có thể học được những thuật toán phổ biến trong ngành khoa học máy tính ."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "Bạn đang tiến bộ rõ rệt đấy! Hãy kể cho ai đó xem bạn đã học được nhiều chừng nào với CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "Tiếng Việt", englishDescription: "Vietn
 
   subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-    feature2: "7 <strong>nhât vật mới</strong> mạnh mẽ với những kĩ năng đặc biệt!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+    feature2: "7 <strong>nhât vật mới</strong> mạnh mẽ với những kĩ năng đặc biệt!" # {change}
+#    feature3: "70+ bonus levels"
     feature4: "<strong>Được thưởng thêm 3500 ngọc</strong> mỗi tháng!"
     feature5: "Những video hướng dẫn qua bàn"
     feature6: "Sự hỗ trợ tận tình qua email"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "Tiếng Việt", englishDescription: "Vietn
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "Tiếng Việt", englishDescription: "Vietn
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "Tiếng Việt", englishDescription: "Vietn
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "Tiếng Việt", englishDescription: "Vietn
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "Tiếng Việt", englishDescription: "Vietn
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "Tiếng Việt", englishDescription: "Vietn
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/zh-HANS.coffee b/app/locale/zh-HANS.coffee
index 9304c8ad0..779d9de50 100644
--- a/app/locale/zh-HANS.coffee
+++ b/app/locale/zh-HANS.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "简体中文", englishDescription: "Chinese
     campaign_player_created_description: "……在这里你可以与你的小伙伴的创造力战斗 <a href=\"/contribute#artisan\">技术指导</a>。"
     campaign_classic_algorithms: "经典算法"
     campaign_classic_algorithms_description: "... 你可以在此学习到计算机科学中最常用的算法"
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "你的进度真快！快告诉其他人你从CodeCombat学到了什么！" # {change}
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "简体中文", englishDescription: "Chinese
   subscribe:
     comparison_blurb: "亲，订阅CodeCombat，大力的提升你的技能！"
     feature1: "60+ 基本关卡（4个世界）" # {change}
-    feature2: "7 个强大 <strong>英雄</strong>以及各式非凡技能!"
+    feature2: "7 个强大 <strong>英雄</strong>以及各式非凡技能!" # {change}
     feature3: "30+ 奖励关卡" # {change}
     feature4: "每月享有3500额外宝石"
     feature5: "视频教学"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "简体中文", englishDescription: "Chinese
     intro_2: "无需经验!"
     free_title: "要多少钱?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
     teacher_subs_title: "教师可免费订阅!"
     teacher_subs_1: "请联系" # {change}
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-    sub_includes_2: "超过60个练习关卡"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+    sub_includes_2: "超过60个练习关卡" # {change}
     sub_includes_3: "视频教学"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
     sub_includes_6: "每月享有3500额外宝石"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "简体中文", englishDescription: "Chinese
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
     how_much_title: "每月的订阅费用是多少?"
     how_much_1: ""
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "简体中文", englishDescription: "Chinese
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "简体中文", englishDescription: "Chinese
     level_tab_thangs_all: "所有"
     level_tab_thangs_conditions: "启动条件"
     level_tab_thangs_add: "增加物体"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "添加组件"
     component_configs: "组件配置"
     config_thang: "双击配置一个thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "简体中文", englishDescription: "Chinese
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "简体中文", englishDescription: "Chinese
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "被添加"
diff --git a/app/locale/zh-HANT.coffee b/app/locale/zh-HANT.coffee
index 609328674..04ec3cd7e 100644
--- a/app/locale/zh-HANT.coffee
+++ b/app/locale/zh-HANT.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "繁体中文", englishDescription: "Chinese
     campaign_player_created_description: "...挑戰同伴的創意 <a href=\"/contribute#artisan\">技術指導</a>."
     campaign_classic_algorithms: "經典演算法"
     campaign_classic_algorithms_description: "... 資訊科學中最著名的演算法。"
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
   share_progress_modal:
     blurb: "您正在建立優秀的進度! 告訴別人您已經從CodeCombat學習到多少東西." # {change}
@@ -408,7 +410,7 @@ module.exports = nativeDescription: "繁体中文", englishDescription: "Chinese
   subscribe:
     comparison_blurb: "訂閱 CodeCombat 來磨練您的技巧!"
     feature1: "60 個以上的基本關卡散佈在4張地圖中" # {change}
-    feature2: "7 個強壯的<strong>新英雄</strong>並每隻都有不同技巧!"
+    feature2: "7 個強壯的<strong>新英雄</strong>並每隻都有不同技巧!" # {change}
     feature3: "30 個以上的額外關卡" # {change}
     feature4: "每個月<strong>3500顆額外寶石</strong>!"
     feature5: "視頻教學"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "繁体中文", englishDescription: "Chinese
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "繁体中文", englishDescription: "Chinese
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "繁体中文", englishDescription: "Chinese
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "繁体中文", englishDescription: "Chinese
     level_tab_thangs_all: "所有的"
     level_tab_thangs_conditions: "啟動條件"
     level_tab_thangs_add: "增加物體"
+#    level_tab_thangs_search: "Search thangs"
     add_components: "增加組件"
     component_configs: "組件組態"
     config_thang: "雙擊來構建物體"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "繁体中文", englishDescription: "Chinese
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "繁体中文", englishDescription: "Chinese
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
   delta:
     added: "已填加"
diff --git a/app/locale/zh-WUU-HANS.coffee b/app/locale/zh-WUU-HANS.coffee
index de36bf1fe..fef4e7e53 100644
--- a/app/locale/zh-WUU-HANS.coffee
+++ b/app/locale/zh-WUU-HANS.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "吴语", englishDescription: "Wuu (Simplifi
 #    campaign_player_created_description: "... in which you battle against the creativity of your fellow <a href=\"/contribute/artisan\">Artisan Wizards</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "吴语", englishDescription: "Wuu (Simplifi
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "吴语", englishDescription: "Wuu (Simplifi
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "吴语", englishDescription: "Wuu (Simplifi
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "吴语", englishDescription: "Wuu (Simplifi
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "吴语", englishDescription: "Wuu (Simplifi
 #    level_tab_thangs_all: "All"
 #    level_tab_thangs_conditions: "Starting Conditions"
 #    level_tab_thangs_add: "Add Thangs"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "吴语", englishDescription: "Wuu (Simplifi
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "吴语", englishDescription: "Wuu (Simplifi
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/locale/zh-WUU-HANT.coffee b/app/locale/zh-WUU-HANT.coffee
index 68e22c2ca..19f1b87c5 100644
--- a/app/locale/zh-WUU-HANT.coffee
+++ b/app/locale/zh-WUU-HANT.coffee
@@ -92,6 +92,8 @@ module.exports = nativeDescription: "吳語", englishDescription: "Wuu (Traditio
     campaign_player_created_description: "……徠箇搭爾好搭爾夥計造起來個賭打 <a href=\"/contribute#artisan\">技術相幫</a>."
 #    campaign_classic_algorithms: "Classic Algorithms"
 #    campaign_classic_algorithms_description: "... in which you learn the most popular algorithms in Computer Science."
+#    campaign_old_multiplayer: "(Deprecated) Old Multiplayer Arenas"
+#    campaign_old_multiplayer_description: "Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas."
 
 #  share_progress_modal:
 #    blurb: "You’re making great progress! Tell your parent how much you've learned with CodeCombat."
@@ -407,9 +409,9 @@ module.exports = nativeDescription: "吳語", englishDescription: "Wuu (Traditio
 
 #  subscribe:
 #    comparison_blurb: "Sharpen your skills with a CodeCombat subscription!"
-#    feature1: "80+ basic levels across 4 worlds"
-#    feature2: "7 powerful <strong>new heroes</strong> with unique skills!"
-#    feature3: "60+ bonus levels"
+#    feature1: "100+ basic levels across 4 worlds"
+#    feature2: "10 powerful <strong>new heroes</strong> with unique skills!"
+#    feature3: "70+ bonus levels"
 #    feature4: "<strong>3500 bonus gems</strong> every month!"
 #    feature5: "Video tutorials"
 #    feature6: "Premium email support"
@@ -596,18 +598,18 @@ module.exports = nativeDescription: "吳語", englishDescription: "Wuu (Traditio
 #    intro_2: "No experience required!"
 #    free_title: "How much does it cost?"
 #    cost_china: "CodeCombat in China is free for the first five levels, after which it costs $9.99 USD per month for access to our other 140+ levels on our exclusive China servers."
-#    free_1: "There are 80+ FREE levels which cover every concept."
+#    free_1: "There are 100+ FREE levels which cover every concept."
 #    free_2: "A monthly subscription provides access to video tutorials and extra practice levels."
 #    teacher_subs_title: "Teachers get free subscriptions!"
 #    teacher_subs_1: "Please fill out our"
 #    teacher_subs_2: "Teacher Survey"
 #    teacher_subs_3: "to set up your subscription."
 #    sub_includes_title: "What is included in the subscription?"
-#    sub_includes_1: "In addition to the 80+ basic levels, students with a monthly subscription get access to these additional features:"
-#    sub_includes_2: "60+ practice levels"
+#    sub_includes_1: "In addition to the 100+ basic levels, students with a monthly subscription get access to these additional features:"
+#    sub_includes_2: "70+ practice levels"
 #    sub_includes_3: "Video tutorials"
 #    sub_includes_4: "Premium email support"
-#    sub_includes_5: "7 new heroes with unique skills to master"
+#    sub_includes_5: "10 new heroes with unique skills to master"
 #    sub_includes_6: "3500 bonus gems every month"
 #    sub_includes_7: "Private Clans"
 #    monitor_progress_title: "How do I monitor student progress?"
@@ -623,8 +625,8 @@ module.exports = nativeDescription: "吳語", englishDescription: "Wuu (Traditio
 #    who_for_1: "We recommend CodeCombat for students aged 9 and up. No prior programming experience is needed."
 #    who_for_2: "We've designed CodeCombat to appeal to both boys and girls."
 #    material_title: "How much material is there?"
-#    material_china: "Approximately 30 hours of gameplay spread over 140+ subscriber-only levels so far, with new levels every week."
-#    material_1: "Approximately 10 hours of free content and an additional 20 hours of subscriber content, with new levels every week."
+#    material_china: "Approximately 40 hours of gameplay spread over 170+ subscriber-only levels so far."
+#    material_1: "Approximately 25 hours of free content and an additional 15 hours of subscriber content."
 #    concepts_title: "What concepts are covered?"
 #    how_much_title: "How much does a monthly subscription cost?"
 #    how_much_1: "A"
@@ -789,6 +791,7 @@ module.exports = nativeDescription: "吳語", englishDescription: "Wuu (Traditio
 #    make_private: "Make clan private"
 #    subs_only: "subscribers only"
 #    create_clan: "Create New Clan"
+#    private_preview: "Preview"
 #    public_clans: "Public Clans"
 #    my_clans: "My Clans"
 #    clan_name: "Clan Name"
@@ -881,6 +884,7 @@ module.exports = nativeDescription: "吳語", englishDescription: "Wuu (Traditio
     level_tab_thangs_all: "所有"
     level_tab_thangs_conditions: "發動條件"
     level_tab_thangs_add: "加物事"
+#    level_tab_thangs_search: "Search thangs"
 #    add_components: "Add Components"
 #    component_configs: "Component Configurations"
 #    config_thang: "Double click to configure a thang"
@@ -1194,6 +1198,7 @@ module.exports = nativeDescription: "吳語", englishDescription: "Wuu (Traditio
 #  concepts:
 #    advanced_strings: "Advanced Strings"
 #    algorithms: "Algorithms"
+#    arguments: "Arguments"
 #    arithmetic: "Arithmetic"
 #    arrays: "Arrays"
 #    basic_syntax: "Basic Syntax"
@@ -1209,7 +1214,8 @@ module.exports = nativeDescription: "吳語", englishDescription: "Wuu (Traditio
 #    strings: "Strings"
 #    variables: "Variables"
 #    vectors: "Vectors"
-#    while_loops: "While Loops"
+#    while_loops: "Loops"
+#    recursion: "Recursion"
 
 #  delta:
 #    added: "Added"
diff --git a/app/styles/play/ladder_home.sass b/app/styles/play/ladder_home.sass
index e9b474a6a..38eb07af8 100644
--- a/app/styles/play/ladder_home.sass
+++ b/app/styles/play/ladder_home.sass
@@ -8,7 +8,7 @@
     margin-bottom: 20px
     text-shadow: 2px 2px 5px black
 
-    &:hover div
+    &:hover div, &:hover .dynamic-level-name
       color: lighten($yellow, 20%)
 
     &:hover img
@@ -19,6 +19,20 @@
     .level-image
       width: 100%
 
+    .dynamic-level-name
+      position: absolute
+      z-index: 1
+      top: 40px
+      width: 100%
+      text-align: center
+
+      text-shadow: 0px 5px 5px black, -2px 0px 2px black, 2px 0px 2px black, 0px -2px 2px black
+      font-size: 72px
+      color: $yellow
+      font-family: $headings-font-family
+      font-variant: small-caps
+      @include transition(color .10s linear)
+
     .overlay-text
       color: $yellow
       font-family: $headings-font-family
diff --git a/app/templates/admin/analytics-subscriptions.jade b/app/templates/admin/analytics-subscriptions.jade
index 83f3e7919..df0befe0e 100644
--- a/app/templates/admin/analytics-subscriptions.jade
+++ b/app/templates/admin/analytics-subscriptions.jade
@@ -7,7 +7,7 @@ block content
   else
 
     if total === 0
-      h4 Fetching dashboard data...
+      h4= refreshDataState
     else
       .container-fluid
         .row
@@ -16,10 +16,10 @@ block content
             div.count= total
           .col-md-5.big-stat.remaining-count
             div.description Remaining
-            div.count= total - cancelled
+            div.count= total - outstandingCancels.length
           .col-md-5.big-stat.cancelled-count
-            div.description Cancelled
-            div.count= cancelled
+            div.description Cancels Outstanding
+            div.count= outstandingCancels.length
           .col-md-5.big-stat.growth-rate
             div.description 30 Day Total Growth
             div.count #{monthlyGrowth.toFixed(1)}%
@@ -38,7 +38,7 @@ block content
 
     h2 Recent Subscribers
     if !subscribers || subscribers.length < 1
-      h4 Fetching recent subscribers...
+      h4= refreshDataState
     else
       table.table.table-striped.table-condensed
         thead.subscribers-thead
@@ -63,10 +63,10 @@ block content
               td
                 a(href="https://dashboard.stripe.com/customers/#{subscriber.customerID}", target="_blank")= subscriber.subscriptionID
               td= subscriber.user.dateCreated.substring(0, 10)
-              td= subscriber.start.substring(0, 10)
+              td= subscriber.start.toISOString().substring(0, 10)
               td
                 if subscriber.cancel
-                  span= subscriber.cancel.substring(0, 10)
+                  span= subscriber.cancel.toISOString().substring(0, 10)
               td
                 if subscriber.user.stripe && subscriber.user.stripe.sponsorID
                   span *sponsored*
@@ -87,7 +87,7 @@ block content
 
     h2 Recent Cancellations
     if !cancellations || cancellations.length < 1
-      h4 Fetching recent cancellations...
+      h4= refreshDataState
     else
       table.table.table-striped.table-condensed
         thead.subscribers-thead
@@ -116,9 +116,9 @@ block content
                 td= cancellation.user.dateCreated.substring(0, 10)
               else
                 td
-              td= cancellation.start.substring(0, 10)
-              td= cancellation.cancel.substring(0, 10)
-              td= moment.duration(new Date(cancellation.cancel) - new Date(cancellation.start)).humanize()
+              td= cancellation.start.toISOString().substring(0, 10)
+              td= cancellation.cancel.toISOString().substring(0, 10)
+              td= moment.duration(cancellation.cancel - cancellation.start).humanize()
               td= cancellation.level
               if cancellation.user
                 td= cancellation.user.ageRange
@@ -135,7 +135,7 @@ block content
 
     h2 Subscriptions
     if !subs || subs.length < 1
-      h4 Fetching subscriptions...
+      h4= refreshDataState
     else
       table.table.table-condensed
         thead
diff --git a/app/templates/editor/level/save.jade b/app/templates/editor/level/save.jade
index ddc03b4c4..1d7a6cd70 100644
--- a/app/templates/editor/level/save.jade
+++ b/app/templates/editor/level/save.jade
@@ -1,7 +1,14 @@
 extends /templates/editor/modal/save-version-modal
 
 block modal-body-content
-  h3= "Level: " + level.get('name') + " - " + (levelNeedsSave ? "Modified" : "Not Modified")
+  h3
+    span(data-i18n="resources.level") Level
+    span=": " + level.get('name') + " - "
+    if levelNeedsSave
+        span(data-i18n="delta.modified") Modified
+    else
+        span(data-i18n="delta.not_modified") Not Modified
+
   if levelNeedsSave
     .changes-stub
     form#save-level-form.form-inline
@@ -23,7 +30,9 @@ block modal-body-content
 
   each component in modifiedComponents
     - var id = component.get('_id')
-    h4= "Component: " + component.get('system') + '.' + component.get('name')
+    h4
+      span(data-i18n="resources.component") Component
+      span= ": " + component.get('system') + '.' + component.get('name')
     .changes-stub
     form.form-inline.component-form(id="save-component-" + id + "-form")
       input(name="component-original", type="hidden", value=component.get('original'))
@@ -41,7 +50,9 @@ block modal-body-content
 
   each system in modifiedSystems
     - var id = system.get('_id')
-    h4= "System: " + system.get('name')
+    h4
+      span(data-i18n="resources.system") System
+      span= ": " + system.get('name')
     .changes-stub
     form.form-inline.system-form(id="save-system-" + id + "-form")
       input(name="system-original", type="hidden", value=system.get('original'))
diff --git a/app/templates/play/ladder_home.jade b/app/templates/play/ladder_home.jade
index 61adab298..ec2df7906 100644
--- a/app/templates/play/ladder_home.jade
+++ b/app/templates/play/ladder_home.jade
@@ -14,7 +14,7 @@ block content
               img.level-image(src="#{level.image}", alt="#{level.name}").img-rounded
             else
               img.level-image(src="/images/pages/play/ladder/multiplayer_notext.jpg", alt="#{level.name}").img-rounded
-            //h3= level.name + (level.disabled ? " (Coming soon!)" : "")
+              h3.dynamic-level-name= level.name + (level.disabled ? " (Coming soon!)" : "")
             .overlay-text.level-difficulty
               span(data-i18n="play.level_difficulty") Difficulty: 
               each i in Array(level.difficulty)
diff --git a/app/templates/play/modal/buy-gems-modal.jade b/app/templates/play/modal/buy-gems-modal.jade
index 9cf945b0a..340d21cb8 100644
--- a/app/templates/play/modal/buy-gems-modal.jade
+++ b/app/templates/play/modal/buy-gems-modal.jade
@@ -22,7 +22,12 @@
         .product
           h4(data-i18n="buy_gems.price") x3500 / mo
           h3(data-i18n="account.subscription")
-          button.start-subscription-button.btn.btn-lg.btn-illustrated.btn-success(data-i18n="subscribe.subscribe_title") Subscribe
+          if me.isPremium()
+            button.disabled.start-subscription-button.btn.btn-lg.btn-illustrated.btn-success
+              | ✓ 
+              span(data-i18n="account.subscribed")
+          else
+            button.start-subscription-button.btn.btn-lg.btn-illustrated.btn-success(data-i18n="subscribe.subscribe_title") Subscribe
                 
       if state === 'declined'
         #declined-alert.alert.alert-danger.alert-dismissible
diff --git a/app/views/admin/AnalyticsSubscriptionsView.coffee b/app/views/admin/AnalyticsSubscriptionsView.coffee
index dce9818af..2165f72cc 100644
--- a/app/views/admin/AnalyticsSubscriptionsView.coffee
+++ b/app/views/admin/AnalyticsSubscriptionsView.coffee
@@ -31,6 +31,8 @@ module.exports = class AnalyticsSubscriptionsView extends RootView
     context.cancelled = @cancellations?.length ? @cancelled ? 0
     context.monthlyChurn = @monthlyChurn ? 0.0
     context.monthlyGrowth = @monthlyGrowth ? 0.0
+    context.outstandingCancels = @outstandingCancels ? []
+    context.refreshDataState = @refreshDataState
     context
 
   afterRender: ->
@@ -44,35 +46,117 @@ module.exports = class AnalyticsSubscriptionsView extends RootView
     @cancelled = 0
     @monthlyChurn = 0.0
     @monthlyGrowth = 0.0
+    @refreshDataState = 'Fetching dashboard data...'
 
   refreshData: ->
     return unless me.isAdmin()
     @resetSubscriptionsData()
     @getCancellations (cancellations) =>
-      @getSubscriptions cancellations, (subscriptions) =>
-        @getSubscribers(subscriptions)
+      @cancellations = cancellations
+      @render?()
+      @getOutstandingCancelledSubscriptions cancellations, (outstandingCancels) =>
+        @outstandingCancels = outstandingCancels
+        @getSubscriptions cancellations, (subscriptions) =>
+          @updateAnalyticsGraphData()
+          @render?()
+          @getSubscribers subscriptions, =>
+            @render?()
+
+  updateFetchDataState: (msg) ->
+    @refreshDataState = msg
+    @render?()
 
   getCancellations: (done) ->
+    cancellations = []
+    @getCancellationEvents (cancelledSubscriptions) =>
+      # Get user objects for cancelled subscriptions
+      userIDs = _.map cancelledSubscriptions, (a) -> a.userID
+      options =
+        url: '/db/user/-/users'
+        method: 'POST'
+        data: {ids: userIDs}
+      options.error = (model, response, options) =>
+        return if @destroyed
+        console.error 'Failed to get cancelled users', response
+      options.success = (cancelledUsers, response, options) =>
+        return if @destroyed
+        userMap = {}
+        userMap[user._id] = user for user in cancelledUsers
+        for cancellation in cancelledSubscriptions when cancellation.userID of userMap
+          cancellation.user = userMap[cancellation.userID]
+          cancellation.level = User.levelFromExp(cancellation.user.points)
+        cancelledSubscriptions.sort (a, b) -> if a.cancel > b.cancel then -1 else 1
+        done(cancelledSubscriptions)
+      @updateFetchDataState 'Fetching cancellations...'
+      @supermodel.addRequestResource('get_cancelled_users', options, 0).load()
+
+  getCancellationEvents: (done) ->
+    cancellationEvents = []
+    earliestEventDate = new Date()
+    earliestEventDate.setUTCMonth(earliestEventDate.getUTCMonth() - 1)
+    earliestEventDate.setUTCDate(earliestEventDate.getUTCDate() - 8)
+    nextBatch = (starting_after, done) =>
+      @updateFetchDataState "Fetching cancellations #{cancellationEvents.length}..."
+      options =
+        url: '/db/subscription/-/stripe_events'
+        method: 'POST'
+        data: {options: {limit: 100}}
+      options.data.options.starting_after = starting_after if starting_after
+      options.data.options.type = 'customer.subscription.updated'
+      options.data.options.created = gte: Math.floor(earliestEventDate.getTime() / 1000)
+      options.error = (model, response, options) =>
+        return if @destroyed
+        console.error 'Failed to get cancelled events', response
+      options.success = (events, response, options) =>
+        return if @destroyed
+        for event in events.data
+          continue unless event.data?.object?.cancel_at_period_end is true and event.data?.previous_attributes.cancel_at_period_end is false
+          continue unless event.data?.object?.plan?.id is 'basic'
+          continue unless event.data?.object?.id?
+          cancellationEvents.push
+            cancel: new Date(event.created * 1000)
+            customerID: event.data.object.customer
+            start: new Date(event.data.object.start * 1000)
+            subscriptionID: event.data.object.id
+            userID: event.data.object.metadata?.id
+
+        if events.has_more
+          return nextBatch(events.data[events.data.length - 1].id, done)
+        done(cancellationEvents)
+      @supermodel.addRequestResource('get_cancellation_events', options, 0).load()
+    nextBatch null, done
+
+  getOutstandingCancelledSubscriptions: (cancellations, done) ->
+    @updateFetchDataState "Fetching oustanding cancellations..."
     options =
-      url: '/db/subscription/-/cancellations'
-      method: 'GET'
+      url: '/db/subscription/-/stripe_subscriptions'
+      method: 'POST'
+      data: {subscriptions: cancellations}
     options.error = (model, response, options) =>
       return if @destroyed
-      console.error 'Failed to get cancellations', response
-    options.success = (cancellations, response, options) =>
+      console.error 'Failed to get outstanding cancellations', response
+    options.success = (subscriptions, response, options) =>
       return if @destroyed
-      @cancellations = cancellations
-      @cancellations.sort (a, b) -> b.cancel.localeCompare(a.cancel)
-      for cancellation in @cancellations when cancellation.user?
-        cancellation.level = User.levelFromExp cancellation.user.points
-      done(cancellations)
-    @supermodel.addRequestResource('get_cancellations', options, 0).load()
+      outstandingCancelledSubscriptions = []
+      for subscription in subscriptions
+        continue unless subscription?.cancel_at_period_end
+        outstandingCancelledSubscriptions.push
+          cancel: new Date(subscription.canceled_at * 1000)
+          customerID: subscription.customerID
+          start: new Date(subscription.start * 1000)
+          subscriptionID: subscription.id
+          userID: subscription.metadata?.id
+      done(outstandingCancelledSubscriptions)
+    @supermodel.addRequestResource('get_outstanding_cancelled_subscriptions', options, 0).load()
 
-  getSubscribers: (subscriptions) ->
+  getSubscribers: (subscriptions, done) ->
+    # console.log 'getSubscribers', subscriptions.length
+    @updateFetchDataState "Fetching recipient subscriptions..."
+    @render?()
     maxSubscribers = 40
 
     subscribers = _.filter subscriptions, (a) -> a.userID?
-    subscribers.sort (a, b) -> b.start.localeCompare(a.start)
+    subscribers.sort (a, b) -> if a.start > b.start then -1 else 1
     subscribers = subscribers.slice(0, maxSubscribers)
     subscriberUserIDs = _.map subscribers, (a) -> a.userID
 
@@ -92,64 +176,159 @@ module.exports = class AnalyticsSubscriptionsView extends RootView
         if hero = subscriber.user.heroConfig?.thangType
           subscriber.hero = _.invert(ThangType.heroes)[hero]
       @subscribers = subscribers
-      @render?()
+      done()
     @supermodel.addRequestResource('get_subscribers', options, 0).load()
 
   getSubscriptions: (cancellations=[], done) ->
+    @getInvoices (invoices) =>
+      subMap = {}
+      for invoice in invoices
+        subID = invoice.subscriptionID
+        if subID of subMap
+          subMap[subID].first = new Date(invoice.date)
+        else
+          subMap[subID] =
+            first: new Date(invoice.date)
+            last: new Date(invoice.date)
+            customerID: invoice.customerID
+        subMap[subID].userID = invoice.userID if invoice.userID
+
+      @getSponsors (sponsors) =>
+        @getRecipientSubscriptions sponsors, (recipientSubscriptions) =>
+          @updateFetchDataState "Fetching recipient subscriptions..."
+          for subscription in recipientSubscriptions
+            subMap[subscription.id] =
+              first: new Date(subscription.start * 1000)
+            subMap[subscription.id].userID = subscription.metadata.id if subscription.metadata?.id?
+            if subscription.cancel_at_period_end
+              subMap[subscription.id].cancel = new Date(subscription.canceled_at * 1000)
+              subMap[subscription.id].end = new Date(subscription.current_period_end * 1000)
+
+          subs = []
+          for subID of subMap
+            sub =
+              customerID: subMap[subID].customerID
+              start: subMap[subID].first
+              subscriptionID: subID
+            sub.cancel = subMap[subID].cancel if subMap[subID].cancel
+            oneMonthAgo = new Date()
+            oneMonthAgo.setUTCMonth(oneMonthAgo.getUTCMonth() - 1)
+            if subMap[subID].end?
+              sub.end = subMap[subID].end
+            else if subMap[subID].last < oneMonthAgo
+              sub.end = subMap[subID].last
+              sub.end.setUTCMonth(sub.end.getUTCMonth() + 1)
+            sub.userID = subMap[subID].userID if subMap[subID].userID
+            subs.push sub
+
+          subDayMap = {}
+          for sub in subs
+            startDay = sub.start.toISOString().substring(0, 10)
+            subDayMap[startDay] ?= {}
+            subDayMap[startDay]['start'] ?= 0
+            subDayMap[startDay]['start']++
+            if endDay = sub?.end?.toISOString().substring(0, 10)
+              subDayMap[endDay] ?= {}
+              subDayMap[endDay]['end'] ?= 0
+              subDayMap[endDay]['end']++
+            for cancellation in cancellations
+              if cancellation.subscriptionID is sub.subscriptionID
+                sub.cancel = cancellation.cancel
+                cancelDay = cancellation.cancel.toISOString().substring(0, 10)
+                subDayMap[cancelDay] ?= {}
+                subDayMap[cancelDay]['cancel'] ?= 0
+                subDayMap[cancelDay]['cancel']++
+                break
+
+          today = new Date().toISOString().substring(0, 10)
+          for day of subDayMap
+            continue if day > today
+            @subs.push
+              day: day
+              started: subDayMap[day]['start'] or 0
+              cancelled: subDayMap[day]['cancel'] or 0
+              ended: subDayMap[day]['end'] or 0
+
+          @subs.sort (a, b) -> a.day.localeCompare(b.day)
+          totalLastMonth = 0
+          for sub, i in @subs
+            @total += sub.started
+            @total -= sub.ended
+            @cancelled += sub.cancelled
+            sub.total = @total
+            totalLastMonth = @total if @subs.length - i is 31
+          @monthlyChurn = @cancelled / totalLastMonth * 100.0 if totalLastMonth > 0
+          if @subs.length > 30 and @subs[@subs.length - 31].total > 0
+            startMonthTotal = @subs[@subs.length - 31].total
+            endMonthTotal = @subs[@subs.length - 1].total
+            @monthlyGrowth = (endMonthTotal / startMonthTotal - 1) * 100
+          done(subs)
+
+  getInvoices: (done) ->
+    invoices = {}
+    nextBatch = (starting_after, done) =>
+      @updateFetchDataState "Fetching invoices #{Object.keys(invoices).length}..."
+      options =
+        url: '/db/subscription/-/stripe_invoices'
+        method: 'POST'
+        data: {options: {limit: 100}}
+      options.data.options.starting_after = starting_after if starting_after
+      options.error = (model, response, options) =>
+        return if @destroyed
+        console.error 'Failed to get invoices', response
+      options.success = (invoiceData, response, options) =>
+        return if @destroyed
+        for invoice in invoiceData.data
+          continue unless invoice.paid
+          continue unless invoice.subscription
+          continue unless invoice.total > 0
+          continue unless invoice.lines?.data?[0]?.plan?.id is 'basic'
+          invoices[invoice.id] =
+            customerID: invoice.customer
+            subscriptionID: invoice.subscription
+            date: new Date(invoice.date * 1000)
+          invoices[invoice.id].userID = invoice.lines.data[0].metadata.id if invoice.lines?.data?[0]?.metadata?.id
+        if invoiceData.has_more
+          return nextBatch(invoiceData.data[invoiceData.data.length - 1].id, done)
+        else
+          invoices = (invoice for invoiceID, invoice of invoices)
+          invoices.sort (a, b) -> if a.date > b.date then -1 else 1
+          return done(invoices)
+      @supermodel.addRequestResource('get_invoices', options, 0).load()
+    nextBatch null, done
+
+  getRecipientSubscriptions: (sponsors, done) ->
+    @updateFetchDataState "Fetching recipient subscriptions..."
+    subscriptionsToFetch = []
+    for user in sponsors
+      for recipient in user.stripe?.recipients
+        subscriptionsToFetch.push
+          customerID: user.stripe.customerID
+          subscriptionID: recipient.subscriptionID
     options =
-      url: '/db/subscription/-/subscriptions'
-      method: 'GET'
+      url: '/db/subscription/-/stripe_subscriptions'
+      method: 'POST'
+      data: {subscriptions: subscriptionsToFetch}
     options.error = (model, response, options) =>
       return if @destroyed
-      console.error 'Failed to get subscriptions', response
-    options.success = (subs, response, options) =>
+      console.error 'Failed to get recipient subscriptions', response
+    options.success = (subscriptions, response, options) =>
       return if @destroyed
-      @resetSubscriptionsData()
-      subDayMap = {}
-      for sub in subs
-        startDay = sub.start.substring(0, 10)
-        subDayMap[startDay] ?= {}
-        subDayMap[startDay]['start'] ?= 0
-        subDayMap[startDay]['start']++
-        if endDay = sub?.end?.substring(0, 10)
-          subDayMap[endDay] ?= {}
-          subDayMap[endDay]['end'] ?= 0
-          subDayMap[endDay]['end']++
-        for cancellation in cancellations
-          if cancellation.subscriptionID is sub.subscriptionID
-            sub.cancel = cancellation.cancel
-            cancelDay = cancellation.cancel.substring(0, 10)
-            subDayMap[cancelDay] ?= {}
-            subDayMap[cancelDay]['cancel'] ?= 0
-            subDayMap[cancelDay]['cancel']++
-            break
+      done(subscriptions)
+    @supermodel.addRequestResource('get_recipient_subscriptions', options, 0).load()
 
-      today = new Date().toISOString().substring(0, 10)
-      for day of subDayMap
-        continue if day > today
-        @subs.push
-          day: day
-          started: subDayMap[day]['start'] or 0
-          cancelled: subDayMap[day]['cancel'] or 0
-          ended: subDayMap[day]['end'] or 0
-
-      @subs.sort (a, b) -> a.day.localeCompare(b.day)
-      totalLastMonth = 0
-      for sub, i in @subs
-        @total += sub.started
-        @total -= sub.ended
-        @cancelled += sub.cancelled
-        sub.total = @total
-        totalLastMonth = @total if @subs.length - i is 31
-      @monthlyChurn = @cancelled / totalLastMonth * 100.0 if totalLastMonth > 0
-      if @subs.length > 30 and @subs[@subs.length - 31].total > 0
-        startMonthTotal = @subs[@subs.length - 31].total
-        endMonthTotal = @subs[@subs.length - 1].total
-        @monthlyGrowth = (endMonthTotal / startMonthTotal - 1) * 100
-      @updateAnalyticsGraphData()
-      @render?()
-      done(subs)
-    @supermodel.addRequestResource('get_subscriptions', options, 0).load()
+  getSponsors: (done) ->
+    @updateFetchDataState "Fetching sponsors..."
+    options =
+      url: '/db/user/-/sub_sponsors'
+      method: 'POST'
+    options.error = (model, response, options) =>
+      return if @destroyed
+      console.error 'Failed to get sponsors', response
+    options.success = (sponsors, response, options) =>
+      return if @destroyed
+      done(sponsors)
+    @supermodel.addRequestResource('get_sponsors', options, 0).load()
 
   updateAnalyticsGraphData: ->
     # console.log 'updateAnalyticsGraphData'
diff --git a/app/views/ladder/MainLadderView.coffee b/app/views/ladder/MainLadderView.coffee
index 1de64a187..a27b43682 100644
--- a/app/views/ladder/MainLadderView.coffee
+++ b/app/views/ladder/MainLadderView.coffee
@@ -54,8 +54,45 @@ module.exports = class LadderHomeView extends RootView
     context.campaigns = campaigns
     context
 
+heroArenas = [
+  {
+    name: 'Zero Sum'
+    difficulty: 3
+    id: 'zero-sum'
+    image: '/file/db/level/550363b4ec31df9c691ab629/MAR26-Banner_Zero%20Sum.png'
+    description: 'Unleash your coding creativity in both gold gathering and battle tactics in this alpine mirror match between red sorcerer and blue sorcerer.'
+  }
+  {
+    name: 'Cavern Survival'
+    difficulty: 1
+    id: 'cavern-survival'
+    image: ''
+    description: 'Stay alive longer than your multiplayer opponent amidst hordes of ogres!'
+  }
+  {
+    name: 'Dueling Grounds'
+    difficulty: 1
+    id: 'dueling-grounds'
+    image: ''
+    description: 'Battle head-to-head against another hero in this basic beginner combat arena.'
+  }
+  {
+    name: 'Multiplayer Treasure Grove'
+    difficulty: 2
+    id: 'multiplayer-treasure-grove'
+    image: ''
+    description: 'Mix collection, flags, and combat in this multiplayer coin-gathering arena.'
+  }
+  {
+    name: 'Harrowland'
+    difficulty: 2
+    id: 'harrowland'
+    image: ''
+    description: 'Go head-to-head against another player in this dueling arena--but watch out for their friends!'
+  }
+]
 
-arenas = [
+oldArenas = [
   {
     name: 'Criss-Cross'
     difficulty: 5
@@ -101,5 +138,6 @@ arenas = [
 ]
 
 campaigns = [
-  {id: 'multiplayer', name: 'Multiplayer Arenas', description: '... in which you code head-to-head against other players.', levels: arenas}
+  {id: 'multiplayer', name: 'Multiplayer Arenas', description: '... in which you code head-to-head against other players.', levels: heroArenas}
+  {id: 'old_multiplayer', name: '(Deprecated) Old Multiplayer Arenas', description: 'Relics of a more civilized age. No simulations are run for these older, hero-less multiplayer arenas.', levels: oldArenas}
 ]
diff --git a/server/payments/subscription_handler.coffee b/server/payments/subscription_handler.coffee
index f28193c67..ea9d8d14e 100644
--- a/server/payments/subscription_handler.coffee
+++ b/server/payments/subscription_handler.coffee
@@ -26,74 +26,67 @@ class SubscriptionHandler extends Handler
     console.warn "Subscription Error: #{user.get('slug')} (#{user._id}): '#{msg}'"
 
   getByRelationship: (req, res, args...) ->
-    return @getCancellations(req, res) if args[1] is 'cancellations'
-    return @getRecentSubscribers(req, res) if args[1] is 'subscribers'
-    return @getActiveSubscriptions(req, res) if args[1] is 'subscriptions'
+    return @getStripeEvents(req, res) if args[1] is 'stripe_events'
+    return @getStripeInvoices(req, res) if args[1] is 'stripe_invoices'
+    return @getStripeSubscriptions(req, res) if args[1] is 'stripe_subscriptions'
+    return @getSubscribers(req, res) if args[1] is 'subscribers'
     super(arguments...)
 
-  getCancellations: (req, res) =>
-    # console.log 'subscription_handler getCancellations'
+  getStripeEvents: (req, res) ->
+    # console.log 'subscription_handler getStripeEvents', req.body?.options
     return @sendForbiddenError(res) unless req.user?.isAdmin()
+    stripe.events.list req.body.options, (err, events) =>
+      return done(err) if err
+      @sendSuccess(res, events)
 
-    earliestEventDate = new Date()
-    earliestEventDate.setUTCMonth(earliestEventDate.getUTCMonth() - 1)
-    earliestEventDate.setUTCDate(earliestEventDate.getUTCDate() - 8)
-
-    cancellationEvents = []
-    nextBatch = (starting_after, done) =>
-      options = limit: 100
-      options.starting_after = starting_after if starting_after
-      options.type = 'customer.subscription.updated'
-      options.created = gte: Math.floor(earliestEventDate.getTime() / 1000)
-      stripe.events.list options, (err, events) =>
-        return done(err) if err
-        for event in events.data
-          continue unless event.data?.object?.cancel_at_period_end is true and event.data?.previous_attributes.cancel_at_period_end is false
-          continue unless event.data?.object?.plan?.id is 'basic'
-          continue unless event.data?.object?.id?
-          cancellationEvents.push
-            subscriptionID: event.data.object.id
-            customerID: event.data.object.customer
-        if events.has_more
-          # console.log 'Fetching more cancellation events', cancellationEvents.length
-          return nextBatch(events.data[events.data.length - 1].id, done)
-        else
-          return done()
-
-    nextBatch null, (err) =>
+  getStripeInvoices: (req, res) ->
+    # console.log 'subscription_handler getStripeInvoices'
+    return @sendForbiddenError(res) unless req.user?.isAdmin()
+    @oldInvoices ?= {}
+    buildInvoicesFromCache = (newInvoices) =>
+      data = (invoice for invoiceID, invoice of @oldInvoices)
+      data = data.concat(newInvoices)
+      data.sort (a, b) -> if a.date > b.date then -1 else 1
+      {has_more: false, data: data}
+    oldInvoiceCutoffDays = 16 # Dependent on Stripe subscription payment retries
+    oldInvoiceCutoffDate = new Date()
+    oldInvoiceCutoffDate.setUTCDate(oldInvoiceCutoffDate.getUTCDate() - oldInvoiceCutoffDays)
+    stripe.invoices.list req.body.options, (err, invoices) =>
       return @sendDatabaseError(res, err) if err
+      newInvoices = []
+      for invoice, i in invoices.data
+        if new Date(invoice.date * 1000) < oldInvoiceCutoffDate
+          if invoice.id of @oldInvoices
+            # Rest of the invoices should be cached, return from cache
+            cachedInvoices = buildInvoicesFromCache(newInvoices)
+            return @sendSuccess(res, cachedInvoices)
+          else
+            # Cache older invoices
+            @oldInvoices[invoice.id] = invoice
+        else
+          # Keep track of new invoices for this page of invoices
+          newInvoices.push(invoice)
+      @sendSuccess(res, invoices)
 
-      cancellations = []
-      createCheckSubFn = (customerID, subscriptionID) =>
-        (done) =>
-          stripe.customers.retrieveSubscription customerID, subscriptionID, (err, subscription) =>
-            return done() if err
-            return done() unless subscription?.cancel_at_period_end
-            cancellations.push
-              cancel: new Date(subscription.canceled_at * 1000)
-              customerID: customerID
-              start: new Date(subscription.start * 1000)
-              subscriptionID: subscriptionID
-              userID: subscription.metadata?.id
-            done()
-      tasks = []
-      for cancellationEvent in cancellationEvents
-        tasks.push createCheckSubFn(cancellationEvent.customerID, cancellationEvent.subscriptionID)
-      async.parallel tasks, (err, results) =>
-        return @sendDatabaseError(res, err) if err
+  getStripeSubscriptions: (req, res) ->
+    # console.log 'subscription_handler getStripeSubscriptions'
+    return @sendForbiddenError(res) unless req.user?.isAdmin()
+    subscriptions = []
+    createGetSubFn = (customerID, subscriptionID) =>
+      (done) =>
+        stripe.customers.retrieveSubscription customerID, subscriptionID, (err, subscription) =>
+          # TODO: return error instead of ignore?
+          subscriptions.push(subscription) unless err
+          done()
+    tasks = []
+    for subscription in req.body.subscriptions
+      tasks.push createGetSubFn(subscription.customerID, subscription.subscriptionID)
+    async.parallel tasks, (err, results) =>
+      return @sendDatabaseError(res, err) if err
+      @sendSuccess(res, subscriptions)
 
-        # TODO: Lookup userID via customer object, for cancellations that are missing them
-        userIDs = _.map cancellations, (a) -> a.userID
-        User.find {_id: {$in: userIDs}}, (err, users) =>
-          return @sendDatabaseError(res, err) if err
-          userMap = {}
-          userMap[user.id] = user.toObject() for user in users
-          for cancellation in cancellations
-            cancellation.user = userMap[cancellation.userID] if cancellation.userID of userMap
-          @sendSuccess(res, cancellations)
-
-  getRecentSubscribers: (req, res) ->
-    # console.log 'subscription_handler getRecentSubscribers'
+  getSubscribers: (req, res) ->
+    # console.log 'subscription_handler getSubscribers'
     return @sendForbiddenError(res) unless req.user?.isAdmin()
     subscriberUserIDs = req.body.ids or []
 
@@ -137,101 +130,6 @@ class SubscriptionHandler extends Handler
         log.debug 'Analytics error:\n' + err
         @sendSuccess(res, userMap)
 
-  getActiveSubscriptions: (req, res) ->
-    # console.log 'subscription_handler getActiveSubscriptions'
-    # TODO: does not return free subs
-    # TODO: add tests
-    # TODO: take date range as input
-
-    return @sendForbiddenError(res) unless req.user?.isAdmin()
-
-    @invoices ?= {}
-    newInvoices = []
-
-    oldInvoiceDate = new Date()
-    oldInvoiceDate.setUTCDate(oldInvoiceDate.getUTCDate() - 20)
-
-    processInvoices = (starting_after, done) =>
-      options = limit: 100
-      options.starting_after = starting_after if starting_after
-      stripe.invoices.list options, (err, invoices) =>
-        return done(err) if err
-        for invoice in invoices.data
-          invoiceDate = new Date(invoice.date * 1000)
-          # Assume we've cached all older invoices if we find a cached one that's old enough
-          return done() if invoice.id of @invoices and invoiceDate < oldInvoiceDate
-          continue unless invoice.paid
-          continue unless invoice.subscription
-          continue unless invoice.total > 0
-          continue unless invoice.lines?.data?[0]?.plan?.id is 'basic'
-          @invoices[invoice.id] =
-            customerID: invoice.customer
-            subscriptionID: invoice.subscription
-            date: invoiceDate
-          @invoices[invoice.id].userID = invoice.lines.data[0].metadata.id if invoice.lines?.data?[0]?.metadata?.id
-        if invoices.has_more
-          return processInvoices(invoices.data[invoices.data.length - 1].id, done)
-        else
-          return done()
-
-    processInvoices null, (err) =>
-      return @sendDatabaseError(res, err) if err
-      subMap = {}
-      invoices = (invoice for invoiceID, invoice of @invoices)
-      invoices.sort (a, b) -> if a.date > b.date then -1 else 1
-      for invoice in invoices
-        subID = invoice.subscriptionID
-        if subID of subMap
-          subMap[subID].first = invoice.date
-        else
-          subMap[subID] =
-            first: invoice.date
-            last: invoice.date
-            customerID: invoice.customerID
-        subMap[subID].userID = invoice.userID if invoice.userID
-
-      # Check sponsored subscriptions
-      User.find {"stripe.sponsorSubscriptionID": {$exists: true}}, (err, sponsors) =>
-        return @sendDatabaseError(res, err) if err
-
-        createCheckSubFn = (customerID, subscriptionID) =>
-          (done) =>
-            stripe.customers.retrieveSubscription customerID, subscriptionID, (err, subscription) =>
-              return done() if err
-              return done() unless subscription?
-              subMap[subscription.id] =
-                first: new Date(subscription.start * 1000)
-              subMap[subscription.id].userID = subscription.metadata.id if subscription.metadata?.id?
-              if subscription.cancel_at_period_end
-                subMap[subscription.id].cancel = new Date(subscription.canceled_at * 1000)
-                subMap[subscription.id].end = new Date(subscription.current_period_end * 1000)
-              done()
-
-        tasks = []
-        for user in sponsors
-          for recipient in user.get("stripe")?.recipients
-            tasks.push createCheckSubFn(user.get('stripe')?.customerID, recipient.subscriptionID)
-        async.parallel tasks, (err, results) =>
-          return @sendDatabaseError(res, err) if err
-
-          subs = []
-          for subID of subMap
-            sub =
-              customerID: subMap[subID].customerID
-              start: subMap[subID].first
-              subscriptionID: subID
-            sub.cancel = subMap[subID].cancel if subMap[subID].cancel
-            oneMonthAgo = new Date()
-            oneMonthAgo.setUTCMonth(oneMonthAgo.getUTCMonth() - 1)
-            if subMap[subID].end?
-              sub.end = subMap[subID].end
-            else if subMap[subID].last < oneMonthAgo
-              sub.end = new Date(subMap[subID].last)
-              sub.end.setUTCMonth(sub.end.getUTCMonth() + 1)
-            sub.userID = subMap[subID].userID if subMap[subID].userID
-            subs.push sub
-          @sendSuccess(res, subs)
-
   subscribeUser: (req, user, done) ->
     if (not req.user) or req.user.isAnonymous() or user.isAnonymous()
       return done({res: 'You must be signed in to subscribe.', code: 403})
diff --git a/server/users/user_handler.coffee b/server/users/user_handler.coffee
index 58d142b0a..b99be480e 100644
--- a/server/users/user_handler.coffee
+++ b/server/users/user_handler.coffee
@@ -173,6 +173,13 @@ UserHandler = class UserHandler extends Handler
       return @sendSuccess(res, @formatEntity(req, req.user, 256))
     super(req, res, id)
 
+  getByIDs: (req, res) ->
+    return @sendForbiddenError(res) unless req.user?.isAdmin()
+    User.find {_id: {$in: req.body.ids}}, (err, users) =>
+      return @sendDatabaseError(res, err) if err
+      cleandocs = (@formatEntity(req, doc) for doc in users)
+      @sendSuccess(res, cleandocs)
+
   getNamesByIDs: (req, res) ->
     ids = req.query.ids or req.body.ids
     returnWizard = req.query.wizard or req.body.wizard
@@ -294,6 +301,7 @@ UserHandler = class UserHandler extends Handler
     return @agreeToCLA(req, res) if args[1] is 'agreeToCLA'
     return @agreeToEmployerAgreement(req, res) if args[1] is 'agreeToEmployerAgreement'
     return @avatar(req, res, args[0]) if args[1] is 'avatar'
+    return @getByIDs(req, res) if args[1] is 'users'
     return @getNamesByIDs(req, res) if args[1] is 'names'
     return @nameToID(req, res, args[0]) if args[1] is 'nameToID'
     return @getLevelSessionsForEmployer(req, res, args[0]) if args[1] is 'level.sessions' and args[2] is 'employer'
@@ -311,6 +319,7 @@ UserHandler = class UserHandler extends Handler
     return @getStripeInfo(req, res, args[0]) if args[1] is 'stripe'
     return @getSubRecipients(req, res) if args[1] is 'sub_recipients'
     return @getSubSponsor(req, res) if args[1] is 'sub_sponsor'
+    return @getSubSponsors(req, res) if args[1] is 'sub_sponsors'
     return @sendOneTimeEmail(req, res, args[0]) if args[1] is 'send_one_time_email'
     return @sendNotFoundError(res)
     super(arguments...)
@@ -384,6 +393,13 @@ UserHandler = class UserHandler extends Handler
         @sendDatabaseError(res, 'No sponsored subscription found') unless info.subscription?
         @sendSuccess(res, info)
 
+  getSubSponsors: (req, res) ->
+    return @sendForbiddenError(res) unless req.user?.isAdmin()
+    User.find {"stripe.sponsorSubscriptionID": {$exists: true}}, (err, sponsors) =>
+      return @sendDatabaseError(res, err) if err
+      cleandocs = (@formatEntity(req, doc) for doc in sponsors)
+      @sendSuccess(res, cleandocs)
+
   sendOneTimeEmail: (req, res) ->
     # TODO: Should this API be somewhere else?
     # TODO: Where should email types be stored?