Bonk's Adventure is a 1990 platformer game developed by Red Company and Atlus and published by Hudson Soft. The game is set in prehistoric times and the player controls Bonk, a caveman who can headbutt enemies. The objective of the game is to defeat King Drool, who has kidnapped Princess Za. The game features six levels and was ported to several home consoles. It was released for the Game Boy in 1992.