The story sees the Straw Hats coming upon a new island dubbed Prison Island to raid its treasure vault, it is ruled by a Marine warden turned scientist named Issac who seems to wield cybernetics and robotics. However the initial attempt goes south when it turns out there is no treasure and the crew are forced to split up while Luffy battles Issac before escaping himself. In the midst of this, Luffy befriends a girl named Jeanne who leads an Anti-Marine force and seeks to take the island back from Issac.
As stated, the game is an open world one where players can go wherever they choose. Taking on missions, fighting enemies and leveling up Luffy's progression as the adventure goes on, which will allow him to access more of his move set to get to further areas and deal more damage to enemies.
The game was released in March 2019, Japan getting it on the 14th and US and Europe getting it the following day (Though as usual, only in the original Japanese dialogue and subbed).
Naturally DLC followed. One was an area quest expansion in which Luffy investigates an island that can apparently reverse aging note . Later followed by three episodes that let you play as certain characters. The first features Zoro, the second features Sabo and the third features Law.
Has the following tropes:
- Action Prologue: The game begins with Luffy seemingly captured but it turns out to be a ploy by the Straw Hats to get into the vault of the island. Once they find it's empty they quickly abort the plan and pull out. Luffy gets his first taste of fighting Issac before jumping off the floating fortress they were on to the island below. Though a cheap shot by Issac sends him tumbling into the ocean before he can stretch to safety. Luckily Jeanne spotted him and saves him, kicking off the game.
- Adaptational Wimp: For gameplay reasons, all four playable characters are this at the start of their stories. Gaining skill points and unlocking skills will make them feel more like their actual skill and power level near the end of the game modes.
- Aloof Older Brother: Issac. It's unclear if he puts a facade or if he's really like this.
- Big Bad: Issac.
- Contrived Coincidence: Virtually every known character from the manga that Luffy runs into is on the island for some reason or other. And, unlike games like Unlimited Adventure and Unlimited Cruise where these characters were at least clones or illusions of sorts, all of them are the real deal. Heck Marine characters like Lucci and Akainu actually play a role in the story.
- Continuity Porn: Aside from the Straw Hats, Issac & Jeanne, many other characters appear such as Sakazuki, Kizaru, Fujitora, Smoker, Tashigi, Law, Buggy, Crocodile, Bartholomew Kuma, Sabo, Rob Lucci, Ichiji, Yonji, Niji and Kuzan. There are also references to events from the manga, like Buggy complaining that he lost an underling to Luffy, or Smoker talking about Punk Hazard.
- Gameplay and Story Integration: When playing as Zoro during his campaign, the minimap is heavily blurred in order to simulate his lack of navigation skills.
- Interface Screw: When playing as Zoro, the mini-map is covered in fog to reflect his complete lack of direction. You can unlock it with 999 skill points though.
- Karma Meter: The game has one and note how Luffy's action, good and bad, as he goes about the adventure. With the townspeople reacting accordingly.
- Kryptonite Is Everywhere: In order for Luffy to not be completely invincible against mooks, the game gives them all seastone weaponry. Somewhat justified by saying they are on an island designated as a prison for dangerous pirates, but the actual canon prison for dangerous pirates in the manga didn't have such luxury.
- Loads and Loads of Loading: Kinda. The game doesn't have a lot slow loading screen (save for when you fast travel) but there's a lot of awkward fade ins and outs when talking with characters or if Luffy is about to enter a fight against a boss.
- Relationship Values: There are several for characters, singular or groups, that are progressed by completing side-quests or miscellaneous tasks, like defeating a number of opponents. Achieving milestones unlocks short dialog scenes with them.
- Skill Scores and Perks: Has a skill tree which will is used to level up Luffy and unlock more moves and bonuses.
- The Battle Didn't Count: Despite several familiar foes serving as boss fights, more often than not the aftermath will either have the battle interrupted before reaching a decisive conclusion or the foe citing they're wasting time fighting and break off. Naturally this is meant to stay consistent with the (at the time) current manga status quo since the heroes haven't really officially had their major showdowns (or re-matches) with most of them in the canon series.
- Wide-Open Sandbox: Revealed to be an open world game. Heck the it's the reason behind the title, World Seeker.
- Would Hit a Girl: This includes a female enemy, Tashigi, and Luffy and Zoro has no qualms attacking her.
- You Shall Not Pass!: Luffy takes on Akaniu for a bit Sabo suddenly appears mid-fight and reminds Luffy of current matters going on the island. Luffy rushes off with Akainu giving chase only for Sabo to get in his way.