Until October 22, Xbox gamers can play a 10-hour free trial of Diablo 4, regardless if they are signed up for Xbox Game Pass Core or Xbox Game Pass Ultimate or not. One of the main perks of Xbox Game Pass Core and Xbox Game Pass Ultimate is the ability to play games for free as part of the weekly Free Play Days. Typically, these events don't give players enough time to play through a game in its entirety, but they are great for those that like to try before they buy.