diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6c408d65..bcdadc2e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -65,6 +65,7 @@ add_library(lego1 SHARED
   LEGO1/legoentity.cpp
   LEGO1/legoentitypresenter.cpp
   LEGO1/legoflctexturepresenter.cpp
+  LEGO1/legofullscreenmovie.cpp
   LEGO1/legogamestate.cpp
   LEGO1/legohideanimpresenter.cpp
   LEGO1/legoinputmanager.cpp
diff --git a/LEGO1/legobackgroundcolor.cpp b/LEGO1/legobackgroundcolor.cpp
index e1d6beca..cc1483b3 100644
--- a/LEGO1/legobackgroundcolor.cpp
+++ b/LEGO1/legobackgroundcolor.cpp
@@ -3,6 +3,9 @@
 #include "legoomni.h"
 #include "legoutil.h"
 #include "legovideomanager.h"
+#include "decomp.h"
+
+DECOMP_SIZE_ASSERT(LegoBackgroundColor, 0x30)
 
 const char *g_delimiter = "\t";
 const char *g_set = "set";
diff --git a/LEGO1/legobackgroundcolor.h b/LEGO1/legobackgroundcolor.h
index aff62fe8..884a477b 100644
--- a/LEGO1/legobackgroundcolor.h
+++ b/LEGO1/legobackgroundcolor.h
@@ -3,11 +3,13 @@
 
 #include "mxvariable.h"
 
+// VTABLE 0x100d74a8
+// SIZE 0x30
 class LegoBackgroundColor : public MxVariable
 {
 public:
   __declspec(dllexport) LegoBackgroundColor(const char *p_key, const char *p_value);
-  void SetValue(const char *p_colorString);
+  virtual void SetValue(const char *p_colorString) override;
 
 private:
   float h;
diff --git a/LEGO1/legofullscreenmovie.cpp b/LEGO1/legofullscreenmovie.cpp
new file mode 100644
index 00000000..f2a287f3
--- /dev/null
+++ b/LEGO1/legofullscreenmovie.cpp
@@ -0,0 +1,41 @@
+#include "legofullscreenmovie.h"
+#include "mxtypes.h"
+#include "legoomni.h"
+#include "decomp.h"
+
+DECOMP_SIZE_ASSERT(LegoFullScreenMovie, 0x24)
+
+// 0x100f3be8
+const char *g_str_enable = "enable";
+
+// 0x100f3bf4
+const char *g_str_disable = "disable";
+
+// OFFSET: LEGO1 0x1003c500
+LegoFullScreenMovie::LegoFullScreenMovie(const char *p_key, const char *p_value)
+{
+  m_key = p_key;
+  m_key.ToUpperCase();
+  SetValue(p_value);
+}
+
+// OFFSET: LEGO1 0x1003c5c0
+void LegoFullScreenMovie::SetValue(const char *p_option)
+{
+  m_value = p_option;
+  m_value.ToLowerCase();
+
+  LegoVideoManager *videomanager = VideoManager();
+  if (videomanager) {
+
+    if (!strcmp(m_value.GetData(), g_str_enable)) {
+      videomanager->EnableFullScreenMovie(TRUE);
+      return;
+    }
+
+    if (!strcmp(m_value.GetData(), g_str_disable)) {
+      videomanager->EnableFullScreenMovie(FALSE);
+      return;
+    }
+  }
+}
diff --git a/LEGO1/legofullscreenmovie.h b/LEGO1/legofullscreenmovie.h
new file mode 100644
index 00000000..ffe350f5
--- /dev/null
+++ b/LEGO1/legofullscreenmovie.h
@@ -0,0 +1,15 @@
+#ifndef LEGOFULLSCREENMOVIE_H
+#define LEGOFULLSCREENMOVIE_H
+
+#include "mxvariable.h"
+
+// VTABLE 0x100d74b8
+// SIZE 0x24
+class LegoFullScreenMovie : public MxVariable
+{
+public:
+  LegoFullScreenMovie(const char *p_key, const char *p_value);
+  virtual void SetValue(const char *p_option) override;
+};
+
+#endif // LEGOFULLSCREENMOVIE_H
diff --git a/LEGO1/legogamestate.cpp b/LEGO1/legogamestate.cpp
index 344cf1ca..0f444f95 100644
--- a/LEGO1/legogamestate.cpp
+++ b/LEGO1/legogamestate.cpp
@@ -1,10 +1,26 @@
 #include "legogamestate.h"
 #include "legoomni.h"
+#include "decomp.h"
+
+// Based on the highest dword offset (0x42c) referenced in the constructor.
+// There may be other members that come after.
+DECOMP_SIZE_ASSERT(LegoGameState, 0x430)
 
 // OFFSET: LEGO1 0x10039550
 LegoGameState::LegoGameState()
 {
   // TODO
+  m_backgroundColor = new LegoBackgroundColor("backgroundcolor", "set 56 54 68");
+  VariableTable()->SetVariable(m_backgroundColor);
+
+  m_tempBackgroundColor = new LegoBackgroundColor("tempBackgroundcolor", "set 56 54 68");
+  VariableTable()->SetVariable(m_tempBackgroundColor);
+
+  m_fullScreenMovie = new LegoFullScreenMovie("fsmovie", "disable");
+  VariableTable()->SetVariable(m_fullScreenMovie);
+
+  VariableTable()->SetVariable("lightposition", "2");
+  SerializeScoreHistory(1);
 }
 
 // OFFSET: LEGO1 0x10039720
diff --git a/LEGO1/legogamestate.h b/LEGO1/legogamestate.h
index ef2eeb1e..b1cd8b60 100644
--- a/LEGO1/legogamestate.h
+++ b/LEGO1/legogamestate.h
@@ -1,8 +1,12 @@
 #ifndef LEGOGAMESTATE_H
 #define LEGOGAMESTATE_H
 
+#include "decomp.h"
 #include "mxtypes.h"
+#include "legobackgroundcolor.h"
+#include "legofullscreenmovie.h"
 
+// SIZE 0x430 (at least)
 class LegoGameState
 {
 public:
@@ -15,7 +19,12 @@ class LegoGameState
   __declspec(dllexport) void SetSavePath(char *p);
 
 private:
-  char *m_savePath;
+  char *m_savePath; // 0x0
+  undefined m_unk04[20];
+  LegoBackgroundColor *m_backgroundColor; // 0x18
+  LegoBackgroundColor *m_tempBackgroundColor; // 0x1c
+  LegoFullScreenMovie *m_fullScreenMovie; // 0x20
+  undefined m_unk24[1036];
 };
 
 #endif // LEGOGAMESTATE_H
diff --git a/LEGO1/legovideomanager.cpp b/LEGO1/legovideomanager.cpp
index 9c1044e2..4105ef2a 100644
--- a/LEGO1/legovideomanager.cpp
+++ b/LEGO1/legovideomanager.cpp
@@ -27,8 +27,14 @@ int LegoVideoManager::DisableRMDevice()
   return 0;
 }
 
+// OFFSET: LEGO1 0x1007c300
+void LegoVideoManager::EnableFullScreenMovie(MxBool p_enable)
+{
+  EnableFullScreenMovie(p_enable, TRUE);
+}
+
 // OFFSET: LEGO1 0x1007c310 STUB
-void LegoVideoManager::EnableFullScreenMovie(unsigned char a, unsigned char b)
+void LegoVideoManager::EnableFullScreenMovie(MxBool p_enable, MxBool p_scale)
 {
   // TODO
 }
diff --git a/LEGO1/legovideomanager.h b/LEGO1/legovideomanager.h
index d71c39a1..4ff8491b 100644
--- a/LEGO1/legovideomanager.h
+++ b/LEGO1/legovideomanager.h
@@ -16,7 +16,8 @@ class LegoVideoManager : public MxVideoManager
 
   __declspec(dllexport) int EnableRMDevice();
   __declspec(dllexport) int DisableRMDevice();
-  __declspec(dllexport) void EnableFullScreenMovie(unsigned char a, unsigned char b);
+  void EnableFullScreenMovie(MxBool p_enable);
+  __declspec(dllexport) void EnableFullScreenMovie(MxBool p_enable, MxBool p_scale);
   __declspec(dllexport) void MoveCursor(int x, int y);
 
   inline Lego3DManager *Get3DManager() { return this->m_3dManager; }
diff --git a/LEGO1/mxvariable.cpp b/LEGO1/mxvariable.cpp
index f18e6a94..0c9bf95a 100644
--- a/LEGO1/mxvariable.cpp
+++ b/LEGO1/mxvariable.cpp
@@ -1,5 +1,8 @@
 #include "mxvariable.h"
 #include "mxstring.h"
+#include "decomp.h"
+
+DECOMP_SIZE_ASSERT(MxVariable, 0x24)
 
 // OFFSET: LEGO1 0x1003bea0
 MxString *MxVariable::GetValue()
diff --git a/LEGO1/mxvariable.h b/LEGO1/mxvariable.h
index 6899dfac..83c83020 100644
--- a/LEGO1/mxvariable.h
+++ b/LEGO1/mxvariable.h
@@ -4,7 +4,8 @@
 #include "mxstring.h"
 #include "mxcore.h"
 
-//VTABLE: 0x100d74a8
+// VTABLE 0x100d7498
+// SIZE 0x24
 class MxVariable
 {
 public: