The player controls Scooby-Doo and Shaggy in a 3D environment. The player defeats bosses, and tracks down Scooby snacks and other pick-ups. The main goal of the game is to defeat the Phantom Virus, a computer virus that has been terrorizing video games. The game consists of 7 stages and 21 levels in total. Each stage consists of two normal levels and a boss level.[4] The player controls Scooby Doo in stages one, four, six, and seven and Shaggy in stages two, three, and five.
Stage One is called "Classic Japan" and the boss of this stage is a Japanese samurai.
Stage Two is called "Ancient Rome" and the boss of this stage is a lion and several gladiators who throw spears.
Stage Three is called "Arctic Circle" and the boss of this stage is the Phantom Virus, riding a snowball-making polar bear.
Stage Four is called "Prehistoric Jungle" and the boss of this stage is a ferocious T-Rex.
Stage Five is called "The Big City" and the boss of this stage is Charlie the Funland Robot from the Scooby-Doo, Where Are You! episode "Foul Play in Funland".
Stage Six is called "Egypt" and the boss of this stage is the Phantom Virus and several mummies.
Stage Seven is called "Amusement Park" and it is the last stage in the game. Just like in the movie, this contains the final and hardest level of the game. The final boss is the Phantom Virus.