The Master Chief returns to battle an ancient evil bent on vengeance and annihilation. Shipwrecked on a mysterious world, faced with new enemies and deadly technology, the universe will never be the same. Enlist aboard the Infinity to experience Halo's original multiplayer and Spartan Ops - episodic fiction-based co-op missions Key Features The Reclaimer Saga Begins: Experience the dawn of an epic new Halo adventure, solo or split screen with up to three friends Go Beyond the Story: Halo 4's Infinity Multiplayer features a vastly expanded suite of multiplayer modes, weapons, vehicles, armor abilities, a new loadout and Spartan-IV player progression system. Spartan Ops: Extend your campaign experience in a massive-scale adventure that builds upon the "Halo 4" Campaign. Receive a weekly series of cinematic episodes on Xbox LIVE followed by new game play missions, played solo or cooperatively with up to three friends effectively delivering two campaign experiences in one game!* War Games: Battle the competition in fresh, immersive new game modes and strategies. Track your groups, stats and scores on HaloWaypoint.com Edge-of-your-seat Entertainment: Immerse yourself in Halo 4's graphics, sound and epic game play including a mysterious and deadly new class of enemies* *Online multiplayer and Spartan Ops missions require Xbox LIVE Gold membership (sold separately).