John Carmack's Mobile Games

John Carmack, the programming genius behind some of the most complex and detailed PC games ever created, is talking to CNN Money today about his new passion, which is -- you guessed it -- cell phone games.

"Developing games for the PC and consoles is all about everything and the kitchen sink," he said. "In many ways, you don't have design decisions to make. You do it all. So I enjoy going back to making decisions about what's important as I'm working on a game."