Epic showed the Unreal Engine 3 demo on iPod Touch devices. This is still a technical demo, but soon they plan to properly port a full-fledged engine for the iPhone / iPod, the same one used in Gears of War 2. Moreover, for CES they want to port the UE3 to another mobile platform which one). Plans look fantastic to unreality.
On the demo shown you can find out one of the Unreal Tournament levels. The movement and rotation of the camera is carried out with your fingers. Shooting - by pressing the trigger of the machine. As you can see, the game does not slow down on the iPhone.
Installation requires OpenGL ES 2.0, so the iPhone 2G and 3G, as well as the old iPod Touch are not suitable. ')
Unfortunately, the recently announced free Unreal Development Kit is designed only for Windows, so independent developers for iPhone will not be able to make games on this engine yet, although it can be expected that a free UDK for iPhone will also appear.