One Piece: Pirate Warriors 4

One Piece: Pirate Warriors 4 (ワンピース海賊無双4, Wan Pīsu Kaizoku Musō Foa, lit. "One Piece: Pirates Unmatched 4") is the fourth entry in the One Piece: Pirate Warriors series.

Gameplay

 * Characters can now jump with, akin to several other mainline Koei Warriors titles of their own IPs.
 * Several characters' movesets are revamped to incorporate midair dashes and midair strings.
 * Pressing during a combo will initiate an Air Juggle.
 * A stamina system is introduced. Certain actions, such as Power Dashing, will consume stamina.
 * Stamina restores gradually when not attacking.
 * The Power Dash is a new dashing move that allows the character to knock back enemies while moving. It is performed by pressing . Holding down will increase the distance traveled. Power dashing consumes stamina. This is similar to the boosters from Dynasty Warriors: Gundam.
 * Charge Attack inputs (undefined) no longer have their own inverted strings/routes, and function more like unique singular attacks akin to other games (or in some cases, the prior R1 Special Skill mechanic or the first installment's undefined attacks).
 * Special Moves/Attacks are now revamped alongside the aforementioned Special Skill mechanic, via pressing R1 and a face button (, undefined,, or ).
 * Each special move has its own gauge which must be full before the move itself can be performed, and each gauge is filled by dealing and receiving damage.
 * Each special move has its own star rating, which indicates the power of the move, along with being able to level them up.
 * The R1 + undefined special is reminiscent of the traditional Musou attack or the original special attack, with the same cinematic sequence style while also slowing down time during the animation.
 * The R1 + special is instead a similar move akin to the above, but is mainly used to access special modes for a set duration, replacing the original STYLE/HAKI Action and Kizuna Rush from the prior games.
 * A number of the specials for returning characters are some of their old string/charge attack finishers from the prior title(s).
 * Giant enemies are now added to the game similar to the Mobile Armor bosses in Dynasty Warriors: Gundam 2.
 * Giant enemies will have an Armor Gauge, which must be reduced in order to deal meaningful damage to them.
 * When the Armor Gauge is reduced to zero, the giant enemy will lose one Shield Icon and enter a Broken Armor state. This is when they can be staggered, and will take more damage than normal.
 * Whittling down their number of Shield Icons will render the enemy into a Stunned State,
 * Full-Force Burst is a new transformation mechanic that some characters have access to.
 * This is a powered-up state which will boost the characters' stats. Some characters will Change Form, which will change their appearance, as well as change some of their attacks and combos.
 * During Full-Force Burst, the special move gauge will gradually decrease.
 * Maps are now more traditionally styled akin to the other mainline Koei games, where they are no longer as grid-based with bases and are now shaped in various forms.
 * A combo-hit-counter is now added.

Playable

 * Monkey D. Luffy
 * Roronoa Zoro
 * Usopp
 * Vinsmoke Sanji
 * Nami
 * Tony Tony Chopper
 * Nico Robin
 * Franky
 * Brook
 * Jinbei
 * Boa Hancock
 * Trafalgar Law
 * Smoker
 * Tashigi
 * Sabo
 * Marco
 * Kuzan
 * Marshall D. Teach
 * Portgas D. Ace
 * Kizaru
 * Akainu
 * Crocodile
 * Shanks
 * Rob Lucci
 * Buggy The Clown
 * Dracule Mihawk
 * Donquixote Doflamingo
 * Fujitora
 * Emporio Ivankov
 * Whitebeard

Non-Playable

 * Daz Bones
 * Bon Clay
 * Galdino
 * Sentomaru

Undetermined Status

 * Magellan
 * Bartholomew Kuma
 * Eneru
 * Perona
 * Gecko Moria
 * Caesar Clown
 * Kaku
 * Jabra
 * Monkey D. Garp

Playable

 * Vinsmoke Reiju
 * Vinsmoke Ichiji
 * Vinsmoke Niji
 * Vinsmoke Yonji
 * Eustass Kid
 * Carrot
 * X-Drake
 * Charlotte Katakuri
 * Basil Hawkins
 * Kaido
 * Bartolomeo
 * Cavendish
 * Big Mom
 * Capone Bege

Unknown

 * Vinsmoke Judge
 * Charlotte Pudding
 * Charlotte Perospero
 * Charlotte Brûlée
 * Kozuki Momonosuke
 * Jack
 * Rebecca
 * Pica

Enemy Characters

 * Zeus
 * Prometheus
 * Napoleon
 * Big Mom
 * Kaido
 * Chess Soldiers

Stages

 * Alabasta Kingdom
 * Enies Lobby
 * Sabaody Archipelago
 * Punk Hazard
 * Dressrosa
 * Whole Cake Island
 * Wano Country

Related Media
The first teaser trailer was revealed at Bandai Namco's booth on July 5, 2019, at the Anime Expo in Los Angeles.

Trivia

 * This is the first game in the series to be released for Xbox One.