One Piece: Round The Land is a 3D actionplatform game played from a mostly side view perspective based on the One Piece anime and manga. The game starts with the Straw Hat crew sighting a new island. Once ashore they enter the local bar and talk to the owner. In the bar they also run into Ace who happens to have a map of the island. The bar owner tells them that they can find a hundred year old treasure with the map but they are not the only pirates who are after the treasure.
The player controls one of the members of the Straw Hat crew and can run, jump and beat-up enemies. The playable characters are: Monkey D. Luffy, Roronoa Zoro, Nami, Usopp, Sanji, Nico Robin and Chopper. Objects like chests can be picked up and thrown at enemies. As the game progresses the player will defeat various pirate crews and bosses like Buggy, Crocodile and Enel have to be defeated in a boss battle.