I think 10 Hudson games on a unit with a ~$60 price tag, a little SRAM, and ROMs modified for single player only would be perfectly reasonable. New Adventure Island, Chew Man Fu, Bomberman 93, Bonk's Adventure, Bonk's Revenge, Blazing Lazers, Dungeon Explorer, Neutopia I and II, and Dragon's Curse. Or something like that. I just picked some titles which I thought might have broad appeal and not be tied up by licensing issues so that there wouldn't be any additional fees to pay out.