Bonk's Adventure

Bonk, the title character, is a caveboy who battles various prehistoric creatures by "bonking" them with his large and invincible forehead. Bonk must rescue the Princess Za, who has been kidnapped by King Drool, the main villain of the game.

Bonk's Adventure was developed by Red Company and Atlus and released on the TurboGrafx-16 in 1989 before being ported to the NES, Game Boy and Amiga. It is a 2D platform game that became quite popular, with subsequent remakes and sequels spawning from the game. It was later included in Nintendo's Virtual Console service as well as the PlayStation Store.