Source : Hermitworks BlogThe guys at Hermitworks have managed to get Quake 3 running on their iPod Touch. (The source code for that game is freely available on the web). No technical information is available yet, but in the clip posted on YouTube, you can see that they run through the maps using the iPod Touch' built-in accelerometer, and they fire their guns by tapping the screen.
They're even supporting multiplayer mode!
We assume this project will work on jailbroken iPhones too.