Game of Thrones is officially delving into spinoff territory, with an untitled prequel series. Even though HBO has released details regarding the plot, timeline, and showrunner, speculation still abounds, including the eventual name of the show. “Whereas Game of Thrones” is concerned with the political goings on of The Known World, the upcoming prequel spinoff will be set thousands of year earlier, focusing on the events that led to everything from the Night’s Watch to the Iron Throne.