Bonk's Adventure is a platform video game developed by Hudson Soft for the TurboGrafx-16 console, released in 1989. Players control Bonk, a prehistoric caveman with a large head, who uses his head to defeat enemies and navigate through colorful levels. The game features various power-ups, including the ability to eat meat to grow larger and gain special abilities. The objective of the game is to rescue Princess Za, who has been kidnapped by the evil King Drool. Players progress through different stages, each filled with unique challenges, enemies, and bosses. The game is known for its whimsical graphics and engaging gameplay, making it a classic in the platform genre.