The final chapter in Epic's Gears of War trilogy wraps up the story of the Delta Squad in its last-ditch effort to save what's left of humanity on war-ravaged Sera. New playable characters join protagonist Marcus Fenix and crew, along with a ghastly group of new enemies to battle. Additional weapons to master include the deadly sawed-off shotgun and digger launcher, which fires an explosive projectile that burrows its way into the ground toward your target. Gears of War 3 also includes both cooperative and competitive multiplayer modes via Xbox Live. Online matches let you gain experience and earn rewards for participating in various game types and