Cartridge Only BUMBLING BICEPS, the world of wrestling will never be the same! ...because now there's a new Kid in town - Kid Muscle! His unwilling arrival on Earth comes conspicuously close to the legendary Muscle League Champions' embarrassing beating at the hands of the d.M.p, a devious new breed of evil wrestling super villains. The Muscle League has recruited King Muscle's own son to reinvigorate their falling fortunes! And they've enlisted and trained a whole new generation of heroes to take on the diabolical d.M.p and save the planet!!