Game developer Bungie has called it quits on its blockbuster Xbox franchise. But its last iteration of Halo might be its best. All-new abilities add stealth and flight to the typical first-person-shooter template. Reach also gives us the series' most assured storytelling yet, making players march through the grim reality of a planet in the throes of an unstoppable alien invasion. And in its richly chaotic multiplayer modes, Reach offers gamers a first-class playground where they can tweak settings for hours of endless skirmishing. Bungie won't be making the next Spartan saga in the Halo universe, but the company's made it so that whoever does will have a tough act to follow.