CheatCodes.com has all the official The New Adventures of Mary Kate And Ashley Game Boy cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Friday May 24, 2013 for The New Adventures of Mary Kate And Ashley are shown below.
Level Password Thorn Mansion: (None) Volcano Mystery: CBTHPM Haunted Camp: GMQTCK Funhouse Mystery: LHDDQJ Hotel Who-Done-It: MDGKMQ
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