diff --git a/include/Game/GameMode.hpp b/include/Game/GameMode.hpp
index 315847ee..0b6beaf3 100644
--- a/include/Game/GameMode.hpp
+++ b/include/Game/GameMode.hpp
@@ -5,10 +5,21 @@
 
 #include "System/SysNew.hpp"
 
+enum GameModes {
+    GameMode_Load          = 0,
+    GameMode_StartupScreen = 1,
+    GameMode_Adventure     = 2,
+    GameMode_FileSelect    = 3,
+    GameMode_WFCSetup      = 4,
+    GameMode_DownloadPlay  = 5,
+    GameMode_Battle        = 6,
+    GameMode_Contact       = 7
+};
+
 class GameMode : public SysObject {
 public:
     /* 000 (vtable) */
-    /* 004 */ unk32 mUnk_004;
+    /* 004 */ s32 mModeId;
     /* 008 */
 
     /* 00 */ virtual ~GameMode();
@@ -20,8 +31,8 @@ public:
     /* 1c */
 
     inline GameMode() {}
-    inline GameMode(unk32 param1) :
-        mUnk_004(param1) {}
+    inline GameMode(s32 modeId) :
+        mModeId(modeId) {}
 
     void func_0202c0b8();
 };
diff --git a/include/Game/GameModeAdventure.hpp b/include/Game/GameModeAdventure.hpp
index 015ab345..934a6a10 100644
--- a/include/Game/GameModeAdventure.hpp
+++ b/include/Game/GameModeAdventure.hpp
@@ -44,9 +44,16 @@ public:
 
 class UnkStruct_020f2978_00 {
 public:
-    /* 00 */ unk8 pad[0x18];
+    /* 000 (vtable) */
+    /* 04 */ unk8 pad[0x14];
     /* 18 */
 
+    /* 00 */ virtual void vfunc_00(); // func_ov000_020d0670
+    /* 04 */ virtual void vfunc_04(); // func_ov000_020cff1c
+    /* 08 */ virtual void vfunc_08(); // func_ov000_020d0000
+    /* 0c */ virtual void vfunc_0c(); // func_ov000_020d0048
+    /* 10 */ virtual void vfunc_10(); // func_ov000_020cff8c
+
     UnkStruct_020f2978_00();
     ~UnkStruct_020f2978_00();
 };