The digital titles that you own and are part of the Back Compat game catalogue will automatically show up in the “Ready to Install” section on your Xbox One or Xbox Series X|S. For disc-based games that are a part of the Back Compat game catalogue, insert the disc and the console will begin downloading the game to your hard drive. After the game has downloaded to your hard drive, users will still need to keep the game disc in the drive to play. Xbox Series S: Use with digital games only^*

Xbox One Backward Compatibility is free and allows you to play select Xbox 360 and Original Xbox games you already own on Xbox One.

Xbox Series X|S Backward Compatibility is free and allows you to play selected Xbox 360, Original Xbox games and Xbox One games you already own on Xbox Series X|S.

Xbox Live Gold is not required for Xbox Backward Compatibility. However, it is required for any standard Xbox Live Gold feature like online multiplayer.

Functionality will be very similar. You can play the digital or disc-based game you own, taking advantage of Xbox features like Game DVR and broadcasting.

Since these are the original games, not remasters, Xbox Live services such as online multiplayer and in-game marketplaces that were available on the Original Xbox, will not be available. However, offline multiplayer scenarios such as co-op, party scenarios (multiple controller on one console), and system-link are supported if they were supported on the Original Xbox. With system-link (if game supports the feature), you can play with others across Original Xbox, Xbox 360, Xbox One, Xbox One S, Xbox One X, Xbox Series X and Xbox Series S consoles.

There are no Xbox achievements for Original Xbox games because this functionality was not available on the Original Xbox at that time of its release. Lastly, game saves will not transfer to Xbox One or Xbox Series X|S but once created on Xbox One or Xbox Series X|S, the game saves can transfer to other Xbox One or Xbox Series X|S consoles through the cloud.