I'm looking to make a game with similar graphical characteristics as the game "Edge" on the AppStore. In essence, it needs some of the following: Geometric shapes with the ability of rotating, pitching, yawing Camera that views down on the world and user can manipulate Ability to use Blender to import models, environments The only thing I've seen close to this has been SIO2 - Free Open Source 3D Game Engine. Is there anything better and actually free? This one requires a $49.99 license fee to eliminate their splash screen and any notion of using their API. I'm fairly new into iPhone Programming but have been programming for awhile already. I already have used Ogre/Blender to create a simple RTS/Tower Defense game for Linux/Windows so I already have some experience making some games.