Hey there @Wagshock80! Welcome to the community! If you’re asking if you can download the engine on to an Xbox series X, unfortunately the short answer is no, you will need a Windows/Linux/Mac computer to create games in Unreal. However, if you’re asking if you can make games for the the Xbox series X inside of Unreal Engine, the answer is a resounding yes! The hardware of the series X is more than enough for any somewhat optimized Unreal Engine game.