You may find this interesting - 3D Engines in iOS Development article from Intersog development team in Codersky International Magazine. Check it out! The New Codersky Issue is Out!
It's shiva 3D oriented... Even if I think shiva is probalby an unkown good product (I have to confirm that). I'm working with Unity, but I've recently bought a basic shiva licence to evaluate this solution. I have a fellow developper that use shiva to create a casual game for Ubisoft, and he find it not perfect but quite good. In the article I think there is some mistake: You can create xcode plugin in Unity.
