If you happen to have your original Xbox 360 disc copy of Call of Duty 4: Modern Warfare lying around, you simply need to stick it in your Xbox One and away you go. You can also purchase a digital version of the Xbox 360 game on the Xbox Store.

Black Ops 2 is a backwards compatible game, which means that you can play it on the Xbox One even though it was originally released for the Xbox 360. To play Black Ops 2 on Xbox One S, you will need to either have the physical disc or have purchased the game digitally from the Xbox Store.