Games for the original Xbox also work on Xbox One, but compatibility is one way: you can't play Xbox One games on Xbox 360 or the original Xbox.

This means that if you own a physical copy or a digital version of Black Ops 2 for Xbox 360, you can insert the disc or download it onto your Xbox One console and play it without any issues. It is important to note that not all Xbox 360 games are backwards compatible on the newer Xbox consoles.