Multiplayer on iOS

Is there a good tutorial, that explains how to create a multiplayer game for iOS? I want to use GameCenter multiplayer.

Use the Proton Angrybots demo, that’s what i’m using, it’s multiplayer and works for PC, Mac, Android and IOS!, It’s great! :slight_smile:

Infact i have the game i made for my android with it in my hand right now…