Game Genie BIOS (Game Boy)

Game Genie
Developer: Codemasters Publisher: Galoob Platform: Unlicensed Game Boy Released in US: 1992 This game has a hidden developer message. This game has hidden developer credits. This game has unused text.

Your friendly neighborhood ROM-editing device, on Game Boy! Betcha didn't think there'd be a page for one of these, did you?

Hidden Developers Credits

Stored at the very beginning of the ROM:

Game Genie(TM) s/ware Vsn 1.17:8-Oct-1992 (C)1992 Codemasters Software Company Limited.
All rights reserved.Hardware:RDA @ LoftLogic, prototypes:RDA & CVJ, Software:RFW @ Big Red.
Code finding:Big Red & co., testing:PRG & DRC(The Loft Lads)

Secret Button Codes

As in the Game Gear version, entering certain commands at the code screen will display one of several hidden messages or enable some special effects.

Message 1

Enter Up, Down, Left, Right

The message reads:

CONGRATULATIONS! YOU'VE FOUND THE EASY SECRET!

NOW FIND THE HARD ONES!

Message 2

Enter B, A, Left, Right, Select.

The message reads:

HELP! I'M A PRISONER IN A GAME GENIE FACTORY!

Message 3 (Credits)

Enter Up, Up, A, B, A, Down, Down.

The message reads:

GAME GENIE

BUILT BY: RICHARD APLIN

PROGRAMMED BY: R FRED H

MANAGED BY: TED CARRON

Message 4

Enter Right, Up, Down, Up, Left, Up, Down, Up.

The message reads:

POEMS HAVE,

RHYMES,

SOMETIMES.

Message 5

Enter B, A, B, Right, Left, Down, Up.

The message reads:

THERE'S RAIN OUTSIDE,

AND THAT IS WHY A,

LAUNDRY DAY,

NEEDS A CLOTHES DRIER.

Message 6

Enter A, A, A, A, B, B, B, Start.

The message reads:

WASHING, WASHING ON THE LINE,

WHO'S THE FAINEST OF THE FINE?

BLUEY WHITENESS!

Why 'finest' is spelled with an 'a' is unknown...

Message 7

Enter Right, Left, Right, Left, Down, Down, Up, Up.

The message reads:

PROVOCATION IS NOT A JOB FOR AMATEURS.

Message 8

Enter Down, Up, Down, Down, Left, Right, Left, Start.

The message reads:

BEWARE:

STRIPES!

Message 9

Enter A, B, A, B, B, A, A, Select.

The message reads:

'BREEZY':-

FRESH AIR FROM THE ALPS!

COMES IN AN EASY-TO-USE AEROSOL CAN!

Easter 1

Enter A, Left, Left, A, B, Right, Right, B to toggle the large fonts upside-down flip.

How... useful...

Easter 2

Enter B, Down, Down, A, B, Up, Up, A to toggle the small fonts upside-down flip.

(Source: nensondubois,CaH4e3)

Secret Game Genie Codes

All codes are entered at the previously fully erased with the B button in Code 3, then you should press A on first space of Code 1 to activate/deactivate it.

Code 1

Enter "DEAD" to toggle vertical screen shake.

Code 2

Enter "ABACADABA" to toggle horizontal screen shake. Both codes may be combined.

Code 3

Enter "F154" to turn the main selection cursor into the fish and back into the hand.

Code 4

Enter "FACE" to turn the GG cursor into the face and back into the cross.

Code 5

Enter "1984" to see the "Explode" easter egg screen.

The message reads:

THIS DEVICE WILL EXPLODE IN 0 SECONDS!

...PFFFT...

RATS. FORGOT THE DYNAMITE!

Code 6

Enter "BAC4" to invert the D-Pad buttons.

Code 7

Enter "1CE" to never release the D-Pad buttons mode.

Code 8

Enter "414E5" to see the Horizontal screen wave effect.

Code 9

Enter "6EE6" to see the Vertical screen wave effect.

(Source: RFredW)