Yeah there's not need to keep all the roms but the list is for fba_libretro wich uses a more recent romset not pifba (I should test that one when I find the time) Pi-fba is supposed to be more optimized so I think you can try all games if the list in green yellow and orange Actually more games should worh with pifba, with fba_libretro many roms were lagging so i removed them from the list