You will need Windows 10 (v1903) or higher and the Xbox app to play PC games via the Xbox Game Pass subscription. The offer is for new subscribers only and cannot be combined with any other offers, as per Microsoft. If you wish to start out on Xbox Game Pass with this title, you can get the first 8 months of membership by paying Rs 489 and subscribing to the service via your Microsoft account, which should be more than enough to familiarise yourself with the new RTS. You can also purchase the game via the Microsoft Store and Steam for Windows PC. Age of Empires IV has been made available with Xbox Game Pass for PC and Ultimate subscriptions.