On twitter today, I saw the following conversation between OUYA and a fan
@playouya Will any android app work on OUYA or does the developer have to modify their app? Probably a trivial question, but not to me!
@KurtisMetz They'll have to modify a bit since it'll be a transition from mobile to 1080P.
Is it really that simple? If so, I don't see any reason why just about every Android game out there won't be available for OUYA.