The Game Boy Color game Monsters, Inc. contains a lot of disabled passwords. One is disabled by being impossible to input, and the rest are listed multiple times. The disabled AAAA password is a Stage Select. The following IPS patch is for the USA/Europe release and will re-enable all of the passwords.
Download IPS patch for “Monsters, Inc. (USA, Europe).gbc”
List of passwords:
CRDT – View the credits.
AAAA – Stage Select [BBBB]
After patching the ROM, the password listed in the brackets will work to enable the original effect.
If you don’t want to patch a ROM, here’s a Game Genie code to re-enable the most important one, the Stage Select:
Note: Changes the disabled AAAA password to BBBB.