A mysterious and unstoppable force threatens the galaxy, the Master Chief is missing and his loyalty questioned. Experience the most dramatic Halo story to date in a 4-player cooperative epic that spans three worlds. Challenge friends and rivals in new multiplayer modes: Warzone, massive 24-player battles, and Arena, pure 4-vs-4 competitive combat.* Your Team is Your Weapon Choose how to achieve objectives while playing solo with AI teammates or with friends in a 4-player cooperative experience using your Xbox Live 14-day Gold trial.1 Warzone New, massive-scale multiplayer mode that supports 24-player battles with both friendly and enemy AI dropping in. It's nonstop action when you confront Spartans, Covenant, and Forerunners while trying to complete a variety of objectives. *Online multiplayer features require Xbox Live Gold membership (sold separately). 1Offer cannot be transferred, redeemed for cash, or combined with any other offer. Offer is not valid on prior Xbox Live Gold membership purchases. After 14-day trial, online multiplayer features require Xbox Live Gold membership (sold separately). Monthly Updates from December 2015 through June 2016. Download from Xbox Live; ISP fees apply. Dates and content subject to change.