One Piece: Pirate Warriors 4 is part of the popular "Pirate Warriors" series, a series of action playing based on the beloved anime and manga series, One Piece. The game combines the intense action play in Dynasty Warriors style with characters, stories and environments from the One Piece universe. In the game, the players control their favorite characters from the series and use their unique abilities to fight big hordes of enemies on large, open battlefields. The game also contains the biggest story bows from the series and also introduces the latest country, Wano.