The Xbox One can play select Xbox 360 games, Xbox Live Arcade games, and even original Xbox games. There’s no fee to do so, so you can play all your old compatible games for free if you still have the discs.
How to Play Your Xbox 360 Games on Your XBOX ONE (Quick Method)
It’s a little more complicated than just popping an Xbox 360 game into your Xbox One and playing. Plus, you’ll need a fast internet connection to download updates for each game you want to play.
Backwards compatibility works the same on all Xbox One consoles, including the original version, the Xbox One S, and the Xbox One X. The only differences are that consoles with more hard drive space can store more backwards compatible games, and a handful of backwards compatible games have been enhanced for the Xbox One X.
Microsoft has put a lot of resources into backwards compatibility over the years, and new games are added fairly regularly. Some of these games have even been enhanced for the Xbox One X, with higher resolutions and better color detail.
