Call of Duty Modern Warfare 2

Modern Warfare 2 might not have as compelling and as solid of a single player storyline, but the first game was a multiplayer juggernaut and so is number 2 plus it was a record breaker. The games graphics looked even more amazing then the first, and the new Spec Ops mode lends itself to so many hours of play with friends. Oh and the online multiplayer that was such a hit in the first game has been tweaked and added to to make it an even bigger hit.