Mystery Mayhem is a third-person action-adventure video game based on the Scooby-Doo franchise.

The gang explore five locations, including: Hambridge Library, the Milton Brothers Movie Studio, the Gold Mountain western theme park, a bayou, and Sherman-Tech Headquarters in Colorado.

In some areas, monsters must be defeated in order to remove the force fields blocking the way out.

The player can refill this meter by consuming Scooby Snacks or other foods found in the level.

Certain food items are counted as collectibles and unlock bonuses if the player finds all of them within a particular level.