I have Mortal Kombat Gold for Dreamcast, and I enter the Hidden Cheat Code menu to access the secret characters, and sometimes the Boss Fatality. Anyway, in the hidden cheats menu I know there are VS Screen Codes at the bottom listed by numbers. Yet, whenever I turn to any number above zero, nothing happens. I've tried all of them to. Is there something wrong with the disc, or do they only work in 2 Player Mode? Can someone help.