id Shows Off 'Rage' Running on iPhone 4 at 60 Frames Per Second.
Carmack's demonstration, using the id Tech 5 engine, could possibly be the most impressive tech we've seen on the iPhone. Running on the iPhone 4 but easily run on the 3GS, the visuals indeed rivaled anything from the PlayStation 2 and original Xbox, and might even be able to give a few current-gen titles a run for their money.
Via Mac Rumors.