Earthworm Jim HD is a high definition remake of the original Earthworm Jim video game.
The main addition to the gameplay is the inclusion of a 4 player cooperative online multi-player mode. The game contains new levels, not present in the original release, which can be played with up to four players both locally or over the internet, and involve teamwork-based puzzles and gameplay. There are fifteen multi-player levels in total. Achievements can also be unlocked in the multiplayer portion of the game, rewarding players for being “No. 1′ in each Xbox Live multiplayer level”.
Jim is a normal earthworm, until a special "super suit" falls from the sky and allows him to operate much like a human, with his "worm-part" acting as a head and the suit acting as arms, body, and legs. Jim's task is two-fold, he must evade the game's many antagonists, who are after him because they want the suit back, and also rescue and protect Princess What's-Her-Name from them. The game plays out with Jim eluding and defeating all enemies, and saving Princess What's-Her-Name. However, not only does she not return Jim's affection, but she is also crushed by the flying cow that was launched at the beginning of the game by Jim himself.
