If you own a compatible Xbox, you'll be able to stream your games from your console directly to your phone and Backbone. This feature works great for playing Xbox games away from home!
To set up Xbox Remote Play, follow the instructions on Xbox's website here.
If you do not own an Xbox console, you can always use Xbox Cloud Gaming if you have an Xbox Game Pass Ultimate subscription. Please note that a Backbone+ Subscription is required to launch Xbox Cloud Gaming from the Backbone App.