Earthworm Jim has been knocked out by a cow dropped out of the sky. Out of shorts, he is taken to hospital and the only solution to save him is to send him inside his own brain. He is then stuck in a bad shape. You have to help him getting out! You will visit four giant universes to finish the game: Fear, Joy, Memory and Imaginary. Each of those world is full of traps and surprises as well as dangerous adversaries you will have to get rid of...

Thanks to a great realisation and by keeping the delirious atmosphere of the two previous episodes, Earthworm Jim succeeds to become a great 3D game. Find old characters from previous games, such as: Peter Puppy, Psy-Crow, Bob the Killer Goldfish, Professor Monkey-For-A-Head... Finish all the levels from this amazing game and help Jim save his own head!