--- a/src/newgrf_spritegroup.cpp	Sat Feb 02 21:09:05 2008 +0000
+++ b/src/newgrf_spritegroup.cpp	Sun Feb 03 00:24:53 2008 +0000
@@ -92,6 +92,7 @@
 		case 0x0C: return object->callback;
 		case 0x10: return object->callback_param1;
 		case 0x11: return 0;
+		case 0x12: return _game_mode;
 		case 0x18: return object->callback_param2;
 		case 0x1A: return UINT_MAX;
 		case 0x1B: return GB(_display_opt, 0, 6);