The preload of Ori and the Will of the Wisps for digital pre-orders and Game Pass users starts
If you had already done the "pre-preload", the one that had downloaded a placeholder file of about 100 Mb, the game should update (or have already updated) on its own with the real version of 10 GB, while if you had not already done so you just have to search for the game in the Store and start the installation, or you can also do it directly from the Xbox Pass game app for mobile. After that you just have to wait a few days to play it!
Please note that Xbox Game Pass is a subscription service that, at a cost of 9.99 euros per month, allows you to play freely and unrestricted to all the titles included in the service, with new games that are added every month. You can buy it from this page on the Microsoft Store,or make a single subscription to Game Pass -Live Gold with Xbox Game Pass Ultimate, which you can purchase from this page.