Halo: Reach - After honing its skills over the course of Halo: Combat Evolved, Halo 2, Halo 3, and ODST, Bungie brings us the definitive Halo experience.
Dead Rising - One man, three days, 55,000 zombies. Can you survive and make it out of the mall?
Grand Theft Auto IV - It may drag in places, but Rockstar's criminal drama is still a shining example of how to build not just a game, but a world.