Maybe the next version of Apple's iPhone will have games, but for now only a few have been ported to iPhone by developers. iChess lets you play the classic game against an AI opponent. One word of warning: if you set the level of the AI too high, you're going to be waiting for a long time to make your next move.
CNET's giving away a 3D printer
Enter for a chance to win* the MakerBot Replicator 3D Printer and all the supplies you need to get started.