Here are some cheats and tips for the game Mario Is Missing!.
Face last Boss:
Enter ZPF*M86 as a password.
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Door First room Second room Third room
First door PVV23CZ CX746YF DWV6P78
Second door FCBSB6W NBGR6CF PCD1384
Third door YHYAMLZ DJ49LZ3
Fourth door Y4MOPFW X**KLDK D9FKPTR
Fifth door G5F96CX S48O5N4 TTMGMQM