Microsoft continue on their quest to make just about every major Xbox 360 game playable on the Xbox One via their excellent backwards compatibility functionality, which allows Xbox 360 games to be played on the current generation Xbox console.
In addition to World at War, Encleverment Experiment, Funtown Mahjong, and E4: Every Extend Extra Extreme are all being added to the list of Xbox 360 games that can be played on the Xbox One as well.
Source: Rheena.com