Hello I repeat : you need to use DIP SWITCHES OPTIONS IN FBA LIBRETRO CORE per-game core option for each game AND TO MODIFY SCREEN OR FLIP SCREEN OR CABINET OPTION only for vertical game. http://blog.recalbox.com/forums/topic/two-configurations-for-fba/#post-33576 I think that the game will rotate automatically. EXEMPLE : Flip Screen option : http://www.mamedb.com/game/gunbird Cabinet option : http://www.mamedb.com/game/1943kai