diff --git a/app/lib/world/thang.coffee b/app/lib/world/thang.coffee
index 41544cbca..426e7541f 100644
--- a/app/lib/world/thang.coffee
+++ b/app/lib/world/thang.coffee
@@ -38,7 +38,7 @@ module.exports = class Thang
   publishNote: (channel, event) ->
     event.thang = @
     @world.publishNote channel, event
-    
+
   setGoalState: (goalID, status) ->
     @world.setGoalState goalID, status
 
diff --git a/app/lib/world/thang_state.coffee b/app/lib/world/thang_state.coffee
index 7ea6a9687..655f41b01 100644
--- a/app/lib/world/thang_state.coffee
+++ b/app/lib/world/thang_state.coffee
@@ -98,10 +98,14 @@ module.exports = class ThangState
         storage = @trackedPropertyValues[propIndex]
         value = @getStoredProp propIndex, type, storage
       if prop is "pos"
-        @thang.pos = @thang.pos.copy()
-        @thang.pos.x = inverse * @thang.pos.x + ratio * value.x
-        @thang.pos.y = inverse * @thang.pos.y + ratio * value.y
-        @thang.pos.z = inverse * @thang.pos.z + ratio * value.z
+        if @thang.pos.distanceSquared(value) > 900
+          # Don't interpolate; it was probably a teleport. https://github.com/codecombat/codecombat/issues/738
+          @thang.pos = value
+        else
+          @thang.pos = @thang.pos.copy()
+          @thang.pos.x = inverse * @thang.pos.x + ratio * value.x
+          @thang.pos.y = inverse * @thang.pos.y + ratio * value.y
+          @thang.pos.z = inverse * @thang.pos.z + ratio * value.z
       else if prop is "rotation"
         @thang.rotation = inverse * @thang.rotation + ratio * value
       @thang.partialState = true
diff --git a/app/locale/es-ES.coffee b/app/locale/es-ES.coffee
index fa6622d88..9111150f1 100644
--- a/app/locale/es-ES.coffee
+++ b/app/locale/es-ES.coffee
@@ -5,7 +5,7 @@ module.exports = nativeDescription: "español (ES)", englishDescription: "Spanis
     sending: "Enviando..."
     cancel: "Cancelar"
     save: "Guardar"
-#    create: "Create"
+    create: "Crear"
     delay_1_sec: "1 segundo"
     delay_3_sec: "3 segundos"
     delay_5_sec: "5 segundos"
@@ -13,13 +13,13 @@ module.exports = nativeDescription: "español (ES)", englishDescription: "Spanis
     fork: "Bifurcar"
     play: "Jugar"
 
-#  units:
-#    second: "second"
-#    seconds: "seconds"
-#    minute: "minute"
-#    minutes: "minutes"
-#    hour: "hour"
-#    hours: "hours"
+  units:
+    second: "segundo"
+    seconds: "segundos"
+    minute: "minuto"
+    minutes: "minutos"
+    hour: "hora"
+    hours: "horas"
 
   modal:
     close: "Cerrar"
@@ -53,7 +53,7 @@ module.exports = nativeDescription: "español (ES)", englishDescription: "Spanis
   login:
     sign_up: "Crear una cuenta"
     log_in: "Entrar"
-#    logging_in: "Logging In"
+    logging_in: "Entrando..."
     log_out: "Salir"
     recover: "recuperar cuenta"
 
@@ -76,12 +76,12 @@ module.exports = nativeDescription: "español (ES)", englishDescription: "Spanis
     no_ie: "CodeCombat no funciona en Internet Explorer 9 o anteriores. ¡Lo sentimos!"
     no_mobile: "¡CodeCombat no fue diseñado para dispositivos móviles y puede que no funcione!"
     play: "Jugar"
-#    old_browser: "Uh oh, your browser is too old to run CodeCombat. Sorry!"
-#    old_browser_suffix: "You can try anyway, but it probably won't work."
-#    campaign: "Campaign"
-#    for_beginners: "For Beginners"
-#    multiplayer: "Multiplayer"
-#    for_developers: "For Developers"
+    old_browser: "Ay, su navegador es demasiado viejo para ejecutar CodeCombat. ¡Lo sentimos!"
+    old_browser_suffix: "Puede tentar de todos modos, pero probablemente no va a funcionar."
+    campaign: "Campaña"
+    for_beginners: "Para principiantes"
+    multiplayer: "Multijugador"
+    for_developers: "Para programadores"
 
   play:
     choose_your_level: "Elige tu nivel"
diff --git a/app/locale/ro.coffee b/app/locale/ro.coffee
index 6fe1819ef..d32ba3c6d 100644
--- a/app/locale/ro.coffee
+++ b/app/locale/ro.coffee
@@ -5,7 +5,7 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
     sending: "Se trimite..."
     cancel: "Anulează"
     save: "Salvează"
-#    create: "Create"
+    create: "Crează"
     delay_1_sec: "1 secundă"
     delay_3_sec: "3 secunde"
     delay_5_sec: "5 secunde"
@@ -13,13 +13,13 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
     fork: "Fork"
     play: "Joacă"
 
-#  units:
-#    second: "second"
-#    seconds: "seconds"
-#    minute: "minute"
-#    minutes: "minutes"
-#    hour: "hour"
-#    hours: "hours"
+  units:
+    second: "secundă"
+    seconds: "secunde"
+    minute: "minut"
+    minutes: "minute"
+    hour: "oră"
+    hours: "ore"
 
   modal:
     close: "Inchide"
@@ -53,7 +53,7 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
   login:
     sign_up: "Crează cont"
     log_in: "Log In"
-#    logging_in: "Logging In"
+    logging_in: "Se conectează"
     log_out: "Log Out"
     recover: "recuperează cont"
 
@@ -226,8 +226,8 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
     skip_tutorial: "Sari peste (esc)"
     editor_config: "Editor Config"
     editor_config_title: "Configurare Editor"
-#    editor_config_language_label: "Programming Language"
-#    editor_config_language_description: "Define the programming language you want to code in."
+    editor_config_language_label: "Limbaj de Programare"
+    editor_config_language_description: "Definește limbajul de programare în care vrei să codezi."
     editor_config_keybindings_label: "Mapare taste"
     editor_config_keybindings_default: "Default (Ace)"
     editor_config_keybindings_description: "Adaugă comenzi rapide suplimentare cunoscute din editoarele obisnuite."
@@ -246,17 +246,17 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
     tip_beta_launch: "CodeCombat a fost lansat beta in Octombrie 2013."
     tip_js_beginning: "JavaScript este doar începutul."
     tip_autocast_setting: "Ajutează setările de autocast apăsând pe rotița de pe buton."
-#    think_solution: "Think of the solution, not the problem."
-#    tip_theory_practice: "In theory, there is no difference between theory and practice. But in practice, there is. - Yogi Berra"
-#    tip_error_free: "There are two ways to write error-free programs; only the third one works. - Alan Perlis"
-#    tip_debugging_program: "If debugging is the process of removing bugs, then programming must be the process of putting them in. - Edsger W. Dijkstra"
-#    tip_forums: "Head over to the forums and tell us what you think!"
+    think_solution: "Gândește-te la soluție, nu la problemă."
+    tip_theory_practice: "Teoretic nu este nici o diferență înte teorie și practică. Dar practic este. - Yogi Berra"
+    tip_error_free: "Există doar două metode de a scrie un program fără erori; numai a treia funcționează. - Alan Perlis"
+    tip_debugging_program: "Dacă a face debuggin este procesul de a scoate bug-uri, atunci a programa este procesul de a introduce bug-uri. - Edsger W. Dijkstra"
+    tip_forums: "Intră pe forum și spune-ți părerea!"
     tip_baby_coders: "În vitor până și bebelușii vor fi Archmage."
     tip_morale_improves: "Se va încărca până până când va crește moralul."
     tip_all_species: "Noi credem în șanse egale de a învăța programare pentru toate speciile."
-#    tip_reticulating: "Reticulating spines."
+    tip_reticulating: "Reticulating spines."
     tip_harry: "Ha un Wizard, "
-#    tip_great_responsibility: "With great coding skill comes great debug responsibility."
+    tip_great_responsibility: "With great coding skill comes great debug responsibility."
 #    tip_munchkin: "If you don't eat your vegetables, a munchkin will come after you while you're asleep."
 #    tip_binary: "There are only 10 types of people in the world: those who understand binary, and those who don't."
 #    tip_commitment_yoda: "A programmer must have the deepest commitment, the most serious mind. ~ Yoda"
@@ -587,16 +587,16 @@ module.exports = nativeDescription: "limba română", englishDescription: "Roman
     warmup: "Încălzire"
     vs: "VS"
 
-#  multiplayer_launch:
-#    introducing_dungeon_arena: "Introducing Dungeon Arena"
-#    new_way: "The new way to compete with code."
-#    to_battle: "To Battle, Developers!"
-#    modern_day_sorcerer: "You know how to code? That's badass. You're a modern-day sorcerer! Isn't about time that you used your magic coding powers to command your minions in epic combat? And we're not talking robots here."
-#    arenas_are_here: "CodeCombat head-to-head multiplayer arenas are here."
-#    ladder_explanation: "Choose your heroes, enchant your human or ogre armies, and climb your way over defeated fellow Wizards to reach the top of the ladders–then challenge your friends in our glorious, asynchronous multiplayer coding arenas. If you're feeling creative, you can even"
-#    fork_our_arenas: "fork our arenas"
-#    create_worlds: "and create your own worlds."
-#    javascript_rusty: "JavaScript a bit rusty? Don't worry; there's a"
-#    tutorial: "tutorial"
-#    new_to_programming: ". New to programming? Hit our beginner campaign to skill up."
-#    so_ready: "I Am So Ready for This"
+  multiplayer_launch:
+    introducing_dungeon_arena: "Prezentăm Dungeon Arena"
+    new_way: "Noul mod de a concura prin linii de cod."
+    to_battle: "La luptă, Developers!"
+    modern_day_sorcerer: "Știi să programezie? Tare. Ești un vrăjitor al noii ere! Nu crezi ca este timpul să îți folosești puterile de programare pentru a conduce în lupte epice minionii tăi? Și nu vorbim despre roboți aici."
+    arenas_are_here: "Arenele CodeCombat multiplayer 1v1 sunt aici."
+    ladder_explanation: "Alegeți eroii,vrăjește armatele de orci sau oameni, și croiește-ți drumul luptând și învingând alți Vrăjitori pentru a ajunge în topul clasamentului. Dacă te simți creativ poți chiar să"
+    fork_our_arenas: "să dai fork la arenele noastre"
+    create_worlds: "și să îți creezi propriile lumi."
+    javascript_rusty: "N-ai mai pus mâna pe JavaScript? Nicio problemă; există un"
+    tutorial: "tutorial"
+    new_to_programming: ". Nou in tainele programării? Încearcă campania de începători pentru ați dezolvata abilitățile."
+    so_ready: "Sunt atât de pregătit pentru asta!"
diff --git a/app/styles/base.sass b/app/styles/base.sass
index 0e9e2c8ee..30980c1fb 100644
--- a/app/styles/base.sass
+++ b/app/styles/base.sass
@@ -218,3 +218,18 @@ body[lang='ru'], body[lang|='zh'], body[lang='ja'], body[lang='pl'], body[lang='
     text-transform: uppercase
     letter-spacing: -1px !important
    
+@media only screen and (max-width: 800px)
+  .main-content-area
+    width: 100%
+  .content
+    width: 100%
+    
+  .footer-link-text a
+    font-size: 17px
+    margin-left: 3px
+    margin-right: 3px
+    
+  .share-buttons
+    margin-bottom: 20px
+  .partner-badges
+    display: none
diff --git a/app/styles/common/top_nav.sass b/app/styles/common/top_nav.sass
index 1f9f64e9d..9a41771fe 100644
--- a/app/styles/common/top_nav.sass
+++ b/app/styles/common/top_nav.sass
@@ -95,3 +95,33 @@
       li
         color: #ebebeb
         padding: 8px 20px
+
+
+#mobile-nav
+  display: none
+@media only screen and (max-width: 800px)
+  #top-nav
+    display: none
+  #mobile-nav
+    display: inline
+    a.navbar-brand
+      padding: 4px 20px 0px 20px
+  
+    button.navbar-toggle
+      background: #483a2d
+      border: 2px solid #2f261d
+    span.icon-bar
+      background: #F9E612
+    
+    ul li
+      font-family: 'Bangers', cursive
+      font-weight: normal
+      color: #fff
+      font-size: 25px
+      margin-top: 5px
+      margin-bottom: 5px
+    .header-font
+      color: #fff
+    .footer-link-text
+      width: 100%
+      display: ineline
diff --git a/app/styles/home.sass b/app/styles/home.sass
index c239a916c..e2ba1fdb0 100644
--- a/app/styles/home.sass
+++ b/app/styles/home.sass
@@ -92,3 +92,38 @@
       width: 660px
       height: 382px
       pointer-events: none
+#mobile-trailer-wrapper
+  display: none
+  
+@media only screen and (max-width: 800px)
+  #home-view
+    #site-slogan
+      font-size: 30px
+    #trailer-wrapper 
+      display: none
+    #mobile-trailer-wrapper
+      display: inline-block
+      
+      width: 100%
+      iframe
+        display: block
+        margin: 0 auto
+    .game-mode-wrapper
+      width: 100%
+      img
+        width: 100%
+      .play-text
+        position: absolute
+        right: 45px
+        bottom: 0px
+        color: $yellow
+        font-size: 50px
+        font-family: Bangers
+        @include transition(color .10s linear)
+        
+
+    
+     
+  h1
+    text-align: center
+    margin-top: 0
diff --git a/app/styles/play/ladder.sass b/app/styles/play/ladder.sass
index e1df78f63..149caeac1 100644
--- a/app/styles/play/ladder.sass
+++ b/app/styles/play/ladder.sass
@@ -70,3 +70,8 @@
 
   #must-log-in button
     margin-right: 10px
+
+@media only screen and (max-width: 800px)
+  #ladder-view
+    #level-column img
+      width: 100%
\ No newline at end of file
diff --git a/app/templates/base.jade b/app/templates/base.jade
index 7bc9817f2..3aec9624e 100644
--- a/app/templates/base.jade
+++ b/app/templates/base.jade
@@ -1,6 +1,28 @@
 body
   #fb-root
   block header
+    .nav.navbar.navbar-fixed-top#mobile-nav
+      .content.clearfix
+        .navbar-header
+          button.navbar-toggle(type="button" data-toggle="collapse" data-target="#collapsible-navbar")
+            span.sr-only Toggle navigation
+            span.icon-bar
+            span.icon-bar
+            span.icon-bar
+          
+          a.navbar-brand(href='/')
+            img(src="/images/pages/base/logo.png", title="CodeCombat - Learn how to code by playing a game", alt="CodeCombat")
+        .collapse.navbar-collapse#collapsible-navbar      
+          ul.nav.navbar-nav
+            li.play
+              a.header-font(href='/play', data-i18n="nav.play") Levels
+            li.editor
+              a.header-font(href='/editor', data-i18n="nav.editor") Editor
+            li.blog
+              a.header-font(href='http://blog.codecombat.com/', data-i18n="nav.blog") Blog
+            li.forum
+              a.header-font(href='http://discourse.codecombat.com/', data-i18n="nav.forum") Forum
+      
     .nav.navbar.navbar-fixed-top#top-nav
       .content.clearfix
         .navbar-header
@@ -32,6 +54,10 @@ body
           if me.isAdmin()
             li.admin
               a.header-font(href='/admin', data-i18n="nav.admin") Admin
+        
+      
+             
+    
 
   block outer_content
     #outer-content-wrapper
diff --git a/app/templates/home.jade b/app/templates/home.jade
index 9e5d3be94..376ea27fb 100644
--- a/app/templates/home.jade
+++ b/app/templates/home.jade
@@ -7,7 +7,8 @@ block content
   #trailer-wrapper
     <iframe width="920" height="518" src="//www.youtube.com/embed/1zjaA13k-dA?rel=0&controls=0&modestbranding=1&showinfo=0&iv_load_policy=3&vq=hd720&wmode=transparent" frameborder="0" wmode="opaque" allowfullscreen></iframe>
     img(src="/images/pages/home/video_border.png")
-  
+  #mobile-trailer-wrapper
+    <iframe src="//www.youtube.com/embed/1zjaA13k-dA" frameborder="0" width="280" height="158"></iframe> 
   hr
 
   .alert.alert-danger.lt-ie10
@@ -21,7 +22,7 @@ block content
       strong(data-i18n="home.old_browser") Uh oh, your browser is too old to run CodeCombat. Sorry!
       br
       span(data-i18n="home.old_browser_suffix") You can try anyway, but it probably won't work.
-
+  
   a#beginner-campaign(href="/play/level/rescue-mission")
     div.game-mode-wrapper
       if isEnglish
diff --git a/app/views/play/level/modal/victory_modal.coffee b/app/views/play/level/modal/victory_modal.coffee
index 3eb7d21f5..3fe539b99 100644
--- a/app/views/play/level/modal/victory_modal.coffee
+++ b/app/views/play/level/modal/victory_modal.coffee
@@ -78,7 +78,7 @@ module.exports = class VictoryModal extends View
     c = super()
     c.body = @body
     c.me = me
-    c.hasNextLevel = _.isObject(@level.get('nextLevel')) and (@level.get('name') isnt "Mobile Artillery")
+    c.hasNextLevel = _.isObject(@level.get('nextLevel'))
     c.levelName = utils.i18n @level.attributes, 'name'
     c.level = @level
     if c.level.get('type') is 'ladder'