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Earthworm Jim (Genesis)

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Title Screen

Earthworm Jim

Developer: Shiny Entertainment
Publishers: Playmates (US), Virgin Interactive (EU)
Platform: Genesis
Released in US: August 2, 1994
Released in EU: August 5, 1994

DevMessageIcon.png This game has a hidden developer message.
DebugIcon.png This game has debugging material.
LevelSelectIcon.png This game has a hidden level select.
RegionIcon.png This game has regional differences.

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This page is rather stubbly and could use some expansion.
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A Lumbricus terrestris in a robotic suit faces off against the likes of a mad scientist with a simian fused into his crown, an alien made of snot and a hideous queen with a gigantic gastropod mollusc for buttocks.

It could only be Earthworm Jim, or perhaps one of its sequels...


Function 0x24b88e compares joypad input against a table of cheat codes at offset 0xc372. Each table entry consists of an 1-byte id followed by 8-bytes, where each byte maps to a button combination.

David Perry's Private Cheat Mode

Hey-shiny-crew-hidden-text.png David-perry-private-cheat-mode.png

A debug mode still exists in Earthworm Jim. It displays information about how much memory is used by the game, as well as its build date. During game play, pause the game and enter the following code: Left + A, B, B, A, Right + A, B, B, A.

A screen showing the Shiny Entertainment staff will appear as Jim called the player "Cheater!", followed by the debug menu.

Menu item Operation
CHEAT MODE Enables invincibility.
START ON LEVEL Use A and B to select a level, then press Start to begin.
FREEZEABILITY Prevents the game from dimming the screen when paused.
MAP VIEW MODE Use the control pad to move the camera around the level; press A to move Jim to the current location.
David-perry-private-cheat-mode.png Earthworm Jim Gen PalCheat.png

The PAL version of the game was built three days after its NTSC counterpart.

Fake Cheat


Exclusive to the PAL version is a screen that mocks the player and then resets the game. During game play, pause the game and enter the following code: A, C, A, A, C, C, A, B.

(Source: Original TCRF research)