The third Scooby-Doo title for Game Boy Advance, Mystery Mayhem takes place in a creepy library known for its paranormal activities. After discovering a dusty book ominously entitled "The Tome of Doom," Scooby, Shaggy, and the rest of the gang must figure out why so many important pages have been torn out. Not only must they work together to find the missing pages, they must do so while being pursued by a ghastly assortment of monsters. ~ Scott Alan Marriott, All Game Guide