Halo. It's yesterday's game, right? The teeming multitudes of online gamers have made Modern Warfare 2 the big online game of the moment, and those in the know are playing Battlefield: Bad Company 2 instead. Sure, Halo has a colossal fanbase, but let's face it: the tech is old and the gameplay a bit old-school by 2010 standards. Isn't it time that the old champ gracefully retired?