Family Guy: Back to the Multiverse is a third-person Cooperative gameplay video game. It's based on the Family Guy television series, most notably the episode Road to the Multiverse, and is also a continuation of The Big Bang Theory. It is rated M for Mature for blood, violence, drug use, mature humor, and sexual content/themes.Players control Stewie Griffin and Brian Griffin in an adventure that pits them against Stewie's evil half-brother, Bertram. Back To The Multiverse features both co-operative and competitive multiplayer modes built around the characters. Extra challenge levels, multiplayer maps, costumes and playable characters are unlocked through gameplay.