It wasn’t scheduled for release until December 24, however Halo: Spartan Assault is available for you to download right now on the Xbox One, just check out the Xbox Games Store on your console.
Halo: Spartan Assault is a top-down shooter already available on Windows PC and Windows 8 mobiles, and it is also scheduled to arrive on the Xbox 360 console some time next month. The game itself is set some time between the events that took place in each of Halo 3 and Halo 4 and follows the rise of Commander Sarah Palmer. You take on the role of either Palmer of a Spartan named Edward Davis in the game.
Spartan Assault has over 30 campaign missions as well as co-operative online multiplayer, so make sure you check it out. At just $14.99 it’s not going to break the bank either (although online play between Xbox One and Xbox 360 consoles owners will not be possible).