Does Apple allow the ability to let users create and share custom made game levels (i.e. custom made maps, race tracks, puzzles) with other players if the mechanics of a game support it? The game editor would be built into the game. I am guessing I would need my own server to support such a setup. Are there any good examples out there of games that support user created content that can be shared among players. Perhaps I'd have some sort of internal ranking system for levels that players rated.