Although the 360 Marketplace is gone, the redemption system still functions through modern platforms.
You can still buy standard Xbox Gift Cards from the Microsoft Store or major retailers like Amazon . These add a balance to your Microsoft account which can be used for backward-compatible games.
Sites like CDKeys , Eneba , and G2A often carry legacy digital codes for specific 360 games or DLC.
Content codes for non-backward-compatible games may no longer work. Always verify if a game is backward compatible before buying a specific game code. How to Redeem Your Codes
Since Microsoft has retired the marketplace, you generally have to look toward third-party retailers for digital codes:
Buying redeem codes for the Xbox 360 requires a bit of strategy now that the official Xbox 360 Store and Marketplace officially . While you can no longer buy new games directly through the console's dashboard store, you can still buy and redeem certain digital codes. Where to Buy Xbox 360 Codes

