Xbox Game Pass has a huge library of well over 100 titles, and each month, a new handful joins the ever-growing collection. But while these monthly offerings often contain at least one or two worthy additions, the main draw for many Game Pass subscribers is the promise that any first-party Microsoft games will be added to the service on day one. For years, this has been a fairly mutually beneficial system for Xbox Game Pass, with subscribers getting AAA blockbuster experiences for a fraction of the retail price, and first-party franchises managing to draw in a wider audience.