Inspired by the anime series One Piece, Omega Force and Koei Tecmo developed this game and the publisher is Bandai Namco Entertainment. This game can be played either in the single player mode or the multiplayer mode. One Piece Pirate Warriors 4 is an action filled game with adventures on the way. 3 One Piece Pirate Warriors 4 System RequirementsĪre you a fan of the anime One Piece? Featuring a hero pirate warrior in a world of wrongdoings? If that is the case then you will love this version of One Piece anime where you can play as the main character yourself.1.1 One Piece Pirate Warriors 4 Trailer.