I game (infrequently) on a 2010 MacBook Pro. It has a 512MB GPU, not enough to play new PC-exclusive games by a long shot, but if the game has a Xbox360 or PS3 port then I'm good. Turn everything as low as needed (as close to console quality to be frank) and off I go. Hook up a PS3 controller and my TV and I couldn't tell you the difference - I played Skyrim that way.