John Carmack demonstrated his awesomeness by showing off a special iPhone version of Rage at QuakeCon 2010! The game was shown on a large screen via an AV cable, it ran at an amazingly smooth 60FPS and unlike most smartphone games the graphics actually look pretty nice.
While the demo was given on the iPhone 4, he said it could run on 3GS and looked best on iPad. The game came about from an experiment with something on the Wii and, in keeping with that experimental model, Rage for iPhone won't have a four-year dev cycle: It will be out this year, before Rage, and it will be cheap, in keeping with the iPhone App Store's model. A second Rage iPhone game will be released alongside the release of the PC/console release next year, and Carmack is still "spot-surveying" the Android market to determine if it's worth supporting. He said it won't happen "this cycle" but he'll reevaluate in about six months. More news from QuakeCon as we hear it.