[quote name='DreamSymphony']I think a few genny games don't work on nomad (Virtua Racing is one I know of). Not sure if game genie will work, but i'd assume it will...[/quote]
Virtua Racing won't IIRC play due to the FX chip (similar to the SNES' for Star Fox and Yoshi's Island) that enhances grafx and provides rotation.
IIRC, while SNES only had 2 games in North America with the FX chip, Virtua Racing was the only one Sega did with it. It was costly to make games with it.
-Brian P