Microsoft have announced that Gears of War Ultimate, the remaster of the first game for Xbox One, will allow you to unlock all 4 of the Xbox 360 games to play in the new Backward Compatibility mode on Xbox One.
If you play the game between Aug. 25 and Dec. 31, 2015, you’ll get access to Gears of War, Gears of War 2, Gears of War 3 and Gears of War: Judgment in Backward Compatibility when it launches in the Autumn.
You’ll also get early access to the Gears of War 4 multiplayer beta and new maps and modes as part of the game.