In Mizubaku Daibouken, you play Hipopo the Hippopotamus who must venture through a large number of enemy-packed levels in search for his missing girlfriend, as well as rescuing other hippo-like creatures along the way. The game features moving platforms, collapsible floors, boats, water-wheels, and plants that can be watered, causing them to grow and allowing you to reach much higher platforms.
Hipopo is supplied with magical water globes, which can be thrown at enemies to freeze them. Once frozen, the enemies can be kicked and destroyed completely. If idle for a few seconds, enemies will unfreeze themselves and continue their business. Every two levels is a boss that needs to be defeated in order to proceed to the next one.
Mizubaku Daibouken was planned for the Amiga by Ocean (under Liquid Kids). Unfortunately, despite the game being completed, the company felt that Liquid Kids would not make a profit, and its release was canceled. However, the Amiga version's lead programmer released the code to the Amiga community in 2003.