The game takes place in a fictional prehistoric era. Its protagonist is Bonk, a strong and bald caveboy who battles anthropomorphic dinosaurs and other prehistoric enemies. Bonk's mission is to rescue Princess Za (a small pink Plesiosaur-type reptile) who has been kidnapped by the evil King Drool (a large, green, Tyrannosaurus-type dinosaur).[2] In the arcade version, Bonk is also assisted by a female version of himself.[3]

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