Retailers and the ESRB have a bad habit of leaking the existence of games before the developer or publisher get a chance to announce them and yesterday Amazon leaked Family Guy: Back to the Multiverse for Xbox 360 and PS3. The title is in reference to an episode called Road to the Multiverse. In Road to the Multiverse, Stewie and Brian visit parallel universe ala the TV series Sliders. Amazon has the release date set for September 25th this year. More details should be available as we near E3.