One Piece: Pirate Warriors 4

One Piece: Pirate Warriors 4 is an action-adventure video game developed by Omega Force and published by Bandai Namco Entertainment for Nintendo Switch, PlayStation 4, Windows, and Xbox One. It is the fourth installment in Pirate Warriors video-game series, based on the One Piece franchise. It is a sequel to the 2015 game One Piece: Pirate Warriors 3. It was released on March 27, 2020.

It is the first game in the series to see a release on Xbox platforms.

Gameplay
The game features game play similar to the previous installments. The game has its own original story that takes the Wano arc from One Piece and changes it. It also features four new multiplayer modes called Giant Boss Battle, Total Bounty Battle, Timed Defense Battle, and Territory Battle.

Original story
This story takes the unfinished Wano arc and modifies the plot, with Cavendish, Bartolomeo, Sabo, Smoker, Tashigi and Kuzan appearing in the arc to help the Straw Hats to free Luffy from his cell. As the battle intensifies between Big Mom and Kaido, a new enemy appears in the form of Blackbeard and his crew. Fighting Blackbeard, Big Mom, and Kaido's crew, players are met with a final battle against Kaido who turns into a dragon after defeating Big Mom, Blackbeard, and Kaido's underlings. Luffy must defeat Kaido at the end and end the suffering of Wano that Kaido brings. The story has one ending, so winning is the only option, which plays a cut scene of everyone cheering and celebrating the freedom that Luffy gave to the Wano people. This arc has an original ending while the manga Wano arc was still on going at the time of its release.

Characters
61 characters are playable in the game, 43 of which are base-game characters, while 18 additional characters were added later via DLC. Previously playable characters Bartholomew Kuma, Caesar Clown, Enel, Gecko Moria, Magellan and Perona were cut, while Monkey D. Garp was demoted to a NPC role, only to return as a DLC character.

* Denotes new characters


 * Bartolomeo*
 * Basil Hawkins*
 * Boa Hancock
 * Borsalino
 * Brook
 * Buggy
 * Capone Bege*
 * Carrot*
 * Cavendish*
 * Charlotte Cracker (DLC)*
 * Charlotte Katakuri*
 * Charlotte Linlin*
 * Charlotte Smoothie (DLC)*
 * Crocodile
 * Donquixote Doflamingo
 * Dracule Mihawk
 * Edward Newgate
 * Emporio Ivankov
 * Eustass Kid*
 * Franky
 * Gol D. Roger (DLC)*
 * Issho
 * Jimbei
 * Kaido*
 * Kaido (Onigashima Battle) (DLC)*
 * Killer (DLC)*
 * Kin'emon (DLC)*
 * Koby (Film: Red) (DLC)*
 * Kozuki Oden (DLC)*
 * Kuzan
 * Marco
 * Marshall D. Teach
 * Monkey D. Garp (DLC)
 * Monkey D. Luffy
 * Monkey D. Luffy (Onigashima Battle) (DLC)*
 * Nami
 * Nico Robin
 * Okiku (DLC)*
 * Portgas D. Ace
 * Rob Lucci
 * Roronoa Zoro
 * Sabo
 * Sakazuki
 * Sanji
 * Shanks
 * Shanks (Film:Red) (DLC)*
 * Silvers Rayleigh (DLC)*
 * Smoker
 * Tashigi
 * Tony Tony Chopper
 * Trafalgar Law
 * Urouge (DLC)*
 * Usopp
 * Uta (Film: Red) (DLC)*
 * Vinsmoke Ichiji*
 * Vinsmoke Judge (DLC)*
 * Vinsmoke Niji*
 * Vinsmoke Reiju*
 * Vinsmoke Yonji*
 * X. Drake (DLC)*
 * Yamato (DLC)*

Development
On July 5, 2019, the game was announced at Anime Expo 2019 with a reveal trailer.

On November 27, 2019 an interview was done with a brand manager for Bandai Namco Entertainment who knew how the game was being developed. The interview was conducted by Bleeding Cool, a news site that mostly covers games, comics, TV, and films. Randy Le talks about how the game returning to the series is something they wanted to bring back for awhile. Randy Le goes on to talk about combat and the different enemies in the game: giant enemies, fast, and even more character battles than the past Pirate Warriors game. Randy Le does not answer any of the other questions asked to prevent spoilers.

Critical response
IGN Mitchell Saltzman gave the game a score of 8 out of 10, saying "Pirate Warriors 4 is a great One Piece-flavored spin on the Musou genre with a deep roster and simple but fun combat".

Sales
The PlayStation 4 version of One Piece: Pirate Warriors 4 was the second best-selling retail game during its first week on sale in Japan, with 75,998 copies being sold. The Switch version was the third bestselling retail game during the same week, selling 61,571 copies. By December 2020, One Piece: Pirate Warriors 4 has sold over 1 million copies, becoming the fastest entry in the Pirate Warriors series to achieve that milestone. By August 2022, it has sold over 2 million copies. By August 2023, it has sold 3 million copies.