There are two kinds of people that will buy Family Guy: Back to the Multiverse: One of them is a diehard Evil Monkey-spotting, Ernie the Chicken-battling, Mayor West-voting devotee of the series. That is, the true believers, those that can't get enough of Seth McFarlane and his animated concoctions.
Wonderfully crass Family Guy Humor; Familiar characters are well-represented; Enough unlocks to keep you busy for a weekend
Only a weekend's-worth of enjoyment out of it; Short; repetitive single-player mode; No online multiplayer