Game Genie (Game Boy)

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The Gameboy Game Genie.

The Game Genie is a runtime ROM modification device. This is one of the many Game Genie products available. This version of the game genie works only on the black and white Gameboy games and will not work on Gameboy color games. Originally all game genies required 9 digit cheat codes to be entered but later models only required the first six digits to be entered. But the last three digits are required for switching a specific ROM bank, so larger games could have a need for this.

There is a way to trick the game genie into working with Gameboy color games but it can damage the cartridge. Click here for more info.

The Gameboy Game Genie also is only compatible with the original Gameboy and the Pocket Gameboy. If inserted into the Super Gameboy it will play games at half speed. A special adapter was created that allows the Game Genie to work on the Super Gameboy fortunately.

Gameboy Secret Message Input

To access these, press the specified buttons in order while the code screen is displayed.

Up, Down Left Right
Congratulations! You've found the easy secret! Now find the hard ones!

B, A, Left, Right, Select
Help! I'm a prisoner in a Game Genie factory!

Up, Up, A, B, A, Down, Down
Game Genie built by: Richard Aplin code by: Jon the Programmer managed by: Paul Ranson.

Right, Up, Down, Up, Left, Up, Down, Up
Poems have, rhymes, sometimes.

B, A, B, Right, Left, Down, Up
There's rain outside, and that is why a, laundry day, needs a clothes dryer.

A, A, A, A, B, B, B, Start
Washing, washing on the line, who's the fairest of the fine? Bluey Whiteness!

Right, Left, Right, Left, Down, Down, Up, Up
Provocation is not a job for amateurs.

A, B, A, B, B, A, A, Select
'Breezy':- Fresh air from the Alps! Comes in an easy-to-use aerosol can!

A, Left, Left, A, B, Right, Right, B
[This one isn't actually a message. Everything below the words "Code Screen," but above the copyright notice, is flipped upside down. The codes are still in their proper order, but the characters are upside down]

Known Versions



  • Game Genie built by: Richard Aplin
  • Code by: Jon the Programmer
  • Managed by: Paul Ranson

External Links

Game Genie
Game Boy - Game Gear - NES - Genesis - Super Nintendo - Sega CD (Cancelled)
DS/DSi/3DS - PSP (Cancelled) - Wii (Cancelled) - PlayStation 3