I've only skimmed through Apple's App Review Guidelines, but I'm pretty sure that this app isn't exactly designed in accordance to them. But who knows, maybe Apple will approve a game that involves Chris T gunning down sumo wrestlers, aliens and other bad guys.
After all, it's perfectly possible that Apple will overlook that the Moral Decay app has the potential to be offensive to a group, portrays realistic violence, has realistic depictions of weapons, is probably designed to upset some users, and contains potentially offensive references to a religion.
Ah, who am I kidding. That video above is probably the closest we'll get to playing this game. [PocketGamer - Thanks Mike!]