I just made the switch to an iMac i5 from an ancient PC. Since I had an older PC, I didn't play super-cutting edge games but did enjoy Halo, Call of Duty & CoD United Offensive, Far Cry and Grand Theft Auto. Now that I have a Mac, I want a few games but I do NOT want to run Windows on my Mac (besides, my Windows disc is pre-SP2 so I'd have to buy a new version). I just bought Call of Duty 4 for the Mac. What other action and/or FPS-type games are available for OS X that are worth looking at? I tried searching here but I keep pulling up recommendations for running games in Windows. Thanks! EDIT: Forgot to mention that I'm just interested in single computer play, not online gaming with others.