I have over 144 games. I know Night Trap, Scotty Pippen Slam City, Supreme Warrior, Dracula Unleashed and a some others have multiple disks. I tried that custom command option but then you are just feeding to opposing commands because it is getting the custom for one core and another for the other core so no game launches. I know that it does work for custom configs I use it to run vertical Lynx and Wonder Swan games in wide screen on one PC and to launch the vertical games on my vertical monitor on another. The two versions of the emulator is the best solution I can come up with.