Scooby-Doo: Mystery Mayhem Cheats for GameBoy Advance

You can absorb WISPS with the Toom of Doom if you open it and point the blue light at the WISP and press the B button. Also, if you want to get more energy out of a big WISP, absorb it with the Toom of Doom and it never runs out of energy.

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Scooby-Doo: Mystery Mayhem Items