E un feature al aplicatiei sa faci download la ce nu ai, dupa care, daca vrei, cumperi acel continut din Microsoft Store de pe consola/site sau in cazul tau, astepti sa apara in Game Pass:
Can I purchase games in the Xbox app on Android and iOS?

In order to bring console remote play to the Xbox app for Android and iOS, we had removed purchase capabilities. You can still easily search for and start downloading any game from the Xbox catalog, right from the app, so it’s ready to play when you get back to your console. Then, if you choose to buy it, you can do that when you’re back on your console before playing.