Current Xfinity TV customers have multiple options for accessing previous seasons of Game of Thrones, including Xfinity X1 and the Stream portal. Additionally, users can download the Stream app and watch on their mobile devices. This is a pretty cool deal for existing Xfinity TV users; if you're interested in taking advantage of this promotion, you'd better get down to it. Watching the entire run of Game of Thrones so far in less than a week will be no easy task.