Hey, I just bought a Mac Mini and I want to develop a multiplayer game, and I would like to ask a few questions. 1) Game Center or a standalone server? currently when playing a "PvP" game with game center I experience high amount of lags and the game is almost unplayable (unless it is not real-time) but my game is going to be real-time. Also, what about p2p? I'm a little afraid this is an issue over 3G as mobile companies don't really allow port-forwarding, is there any other way it would be possible? 2) Should I wait till sprite-kit gets public? or start developing the game with cocos2d and Box2D? the game itself isn't so complicated and will probably be 2D. Sincerely, Adam.