Buying Xbox 360 games for your Xbox One remains a straightforward process despite the original Xbox 360 Marketplace closure on . While you can no longer buy content directly through the legacy console interface, hundreds of backward-compatible titles have been moved to the modern Microsoft Store, making them accessible on Xbox One, Xbox Series X|S, and online. How to Purchase Digital Xbox 360 Games
Select the game and press (if prompted) to reveal the cost before continuing with the purchase. Via Web Browser : how to buy xbox 360 games on xbox one
Once purchased on your account, the game will automatically appear in your console's library under . Installing Games You Already Own Buying Xbox 360 games for your Xbox One