Portal 2

Portal 2 is incredible. You’ll find plenty of gushing reviews just about everywhere else on the ‘net so I will keep this short. The game combines a wickedly funny narrative with innovative and engaging game play mechanics. Portal 2 isn’t terribly difficult (it’s much easier than Portal), but there’s still nothing more satisfying than completing a particularly rube-goldberg-esque puzzle. Also, multiplayer co-op adds a whole new level of complication to the puzzling. Hopefully Valve will keep releasing new maps for the co-op game in the near-future. This is one of those games with a fairly universal appeal which you try to get your non-gamer friends to play just so they can get hooked on gaming (and heroin).