Call of Duty: Black Ops II, Xbox 360 game, was added for Xbox One backwards compatibility today.
If you already bought the game for Xbox 360, it should show up in your Xbox One game library. If not, you can pick it up right now on your console or through the Xbox Store website.
Black Ops II has more than 213,000 votes from people asked for it to be added to the backwards compatibility. So now, it is.