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Nintendo Entertainment System · cheat codes
Maniac Mansion cheats & codes
8 codes for Maniac Mansion on the Nintendo Entertainment System, including Game Genie codes.
Maniac Mansion Game Genie codes
How to use: Galoob's Game Genie plugged in between the console and the cartridge. Type the codes in on its start-up screen, then press Start. In emulators, add them through the cheat menu and choose the Game Genie format if asked.
| Effect | Code |
|---|---|
| All Codes Start Out As 0000 | SEXGKASZ |
Maniac Mansion Emulator memory codes
How to use: These codes change values directly in the game's memory, written as address:value. They are meant for emulators: add them through your emulator's cheat menu.
| Effect | Code |
|---|---|
| All Codes Start Out As 0000 | SEXGKASZ |
| Edna's Phone # is 0000 | 6133:00
6134:00
6135:00
6136:00 |
| Safe Combination is 0000 | 6137:00
6138:00
6139:00
613A:00 |
| Seckrit Lab Code is 0000 | 613B:00
613C:00
613D:00
613E:00 |
| Police Radio Code is 0000 | 614D:00
614E:00
614F:00
6150:00 |
| Control Character Modifier | 6100:00 |
| CD Player Is Always Turned On (Although No Music Can Be Heard) | 6638:63 |
Using cheats today
Original cheat devices like the Game Genie, Action Replay and GameShark still turn up second-hand and work with original cartridges. Most modern emulators also have a built-in cheat menu that accepts these formats, so you can toggle codes on and off without extra hardware. Codes can differ between regional releases and revisions of a game; if one doesn't work, try the code list for another version.
Cheats can corrupt save files in rare cases, so back up your saves before experimenting.
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Cheat codes are from the libretro-database community collection, used under CC BY-SA 4.0; the code tables on this page are shared under the same license. Codes are provided as-is: some may not work on every version of the game.