Assassins Creed: Brotherhood. Got it for Christmas so I didn't technically buy it, but for $60 to by a game that about 5 missions in I lost all interest in the story and just resorted to murdering guards for no apparent reason other than he pushed me because I walked within 10 feet of him is not $60 material to me. I've tried to get back into it, but I still just lose interest after a couple missions.