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 - innovative episodic fiction-based co-op missions. Key Features: 1. The Reclaimer Saga Begins: Experience the dawn of an epic new Halo adventure, solo or split screen with up to three friends. 2. 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. 3. 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.