The player controls a sailor by the name of Momotaru, who must use barrels to defeat the titular pirate crew. Momotaru has no attacks of his own. However, he has the ability to grab barrels, drums, large bags, and various other items which he can throw (either horizontally or vertically) across the screen. Any pirate who stands in the way of a barrel or other object will be hurled off the screen. Barrels that impact the walls of a stage or other barrels or objects will shatter and produce points, while other objects are invulnerable (but do not produce points).