diff --git a/include/constants/vram_hardcoded.h b/include/constants/vram_hardcoded.h
index 6c19a37e8..5854370cd 100644
--- a/include/constants/vram_hardcoded.h
+++ b/include/constants/vram_hardcoded.h
@@ -1,10 +1,14 @@
 #ifndef GUARD_VRAM_HARDCODED_H
 #define GUARD_VRAM_HARDCODED_H
 
-#if (ENGINE == ENGINE_SA1)
+#if (GAME == GAME_SA1)
 #define VRAM_RESERVED_DUST_EFFECT_BRAKING ((void *)OBJ_VRAM0 + 0x2100)
-#elif (ENGINE == ENGINE_SA2)
+#define VRAM_RESERVED_BUBBLES_SMALL       (void *)(OBJ_VRAM0 + 0x2A20)
+#define VRAM_RESERVED_BUBBLES_GROUP       (void *)(OBJ_VRAM0 + 0x2AA0)
+#elif (GAME == GAME_SA2)
 #define VRAM_RESERVED_DUST_EFFECT_BRAKING ((void *)OBJ_VRAM0 + 0x2300)
+#define VRAM_RESERVED_BUBBLES_SMALL       (void *)(OBJ_VRAM0 + 0x2A40)
+#define VRAM_RESERVED_BUBBLES_GROUP       (void *)(OBJ_VRAM0 + 0x2AC0)
 #endif
 
 #endif // GUARD_VRAM_HARDCODED_H
diff --git a/include/game/sa1_sa2_shared/camera.h b/include/game/sa1_sa2_shared/camera.h
index 3f03eea95..493983324 100644
--- a/include/game/sa1_sa2_shared/camera.h
+++ b/include/game/sa1_sa2_shared/camera.h
@@ -18,9 +18,17 @@ typedef void (*BgUpdate)(s32, s32);
 
 #define CAM_MODE_SPECTATOR 4
 
+// NOTE: This was copy-pasted from SA2.
+//       There are type differences for members
 struct Camera {
-    /* 0x00 */ s32 x;
-    /* 0x04 */ s32 y;
+    /* 0x00|0x04 */ CamCoord x;
+    /* 0x02|0x04 */ CamCoord y;
+#if (GAME == GAME_SA1)
+    u8 filler4[0x2C];
+    /* 0x30 */ struct Task *movementTask;
+    /* 0x34 */ s16 shakeOffsetX;
+    /* 0x36 */ s16 shakeOffsetY;
+#elif (GAME == GAME_SA2)
     /* 0x08 */ s32 unk8;
     /* 0x0C */ s32 unkC;
     /* 0x10 */ s32 unk10;
@@ -54,11 +62,12 @@ struct Camera {
     /* 0x56 */ s16 unk56;
     /* 0x58 */ BgUpdate fnBgUpdate;
     /* 0x5C */ struct Task *movementTask;
-    /* 0x60 */ s16 unk60;
-    /* 0x62 */ s16 unk62;
+    /* 0x60 */ s16 shakeOffsetX;
+    /* 0x62 */ s16 shakeOffsetY;
     /* 0x64 */ s16 unk64;
     /* 0x66 */ u8 spectatorTarget;
-}; /* size 0x80 */
+#endif
+}; /* size 0x80(in SA2) */
 
 extern struct Camera gCamera;
 
diff --git a/include/game/water_effects.h b/include/game/water_effects.h
index bd834d725..5bea7c88f 100644
--- a/include/game/water_effects.h
+++ b/include/game/water_effects.h
@@ -8,12 +8,15 @@ typedef struct {
     u16 pal[32][16];
 } WaterData;
 
-// Seems to be belonging to water effect
 typedef struct {
+#if (GAME == GAME_SA1)
+    /* 0x00*/ u8 filler0[2];
+#elif (GAME == GAME_SA2)
     /* 0x00 */ bool8 isActive;
     /* 0x01 */ u8 unk1;
     /* 0x02 */ u8 unk2;
     /* 0x03 */ u8 unk3;
+#endif
     /* 0x04 */ s16 currentWaterLevel;
     /* 0x06 */ s16 targetWaterLevel;
     /* 0x08 */ u32 unk8;