Scooby-Doo Mystery Mayhem Cheats

Opening the bridge
On level 2, to open the bridge there are four switches. Press switches 1, 2, and 4.

Weird Wild West: Safe code
The safe which is in the bank has a three digit code. The code is "1-3-7". It can be found written on the blackboard in the schoolhouse.

Hi-Tech Terror: Getting the red access card
When you need the access card so that Scooby and Shaggy can get through the mist. You must first three mists then go to one of the lockers. One should open and have the red access card inside. Then, go over to the controls so that you can get the robot. Take it over to the red access card door. The door should then open. Go in and turn off all of the knobs. You are now able to go through the door that was blocked by steam.

Hi-Tech Terror: Elevator
When you go in the elevator and go through into the room with the panel of green covering the door, go to the control box on the left. Press the first button once, the second button twice, the third button twice, and the fourth button once. You will be able to walk through.