One Piece: Pirate Warriors 4 has significantly expanded its roster and content through multiple Character Passes and free updates . As of early 2026, the game features a total of 67 playable characters Recent DLC & Character Passes The game recently concluded its Character Pass 3 , which introduced six new characters across two waves:

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Title: One Piece: Pirate Warriors 4 – NSP Update & DLC Guide (Latest Content)

If you’re still sailing with the One Piece: Pirate Warriors 4 NSP version on Nintendo Switch (or emulation), staying current with updates and DLC is key for the full experience. Here’s what you need to know:

One Piece: Pirate Warriors 4: The Ultimate Guide to NSP Updates and DLC

Title: Set Sail for the Ultimate Battle: Everything You Need to Know About One Piece: Pirate Warriors 4 Updates and DLC

For fans of the Straw Hat Pirates, One Piece: Pirate Warriors 4 is arguably the definitive gaming experience. Developed by Omega Force, it perfectly blends the "Musou" (warriors) gameplay style with the vibrant world of Eiichiro Oda’s masterpiece. It covers the arcs from the Paramount War all the way through Whole Cake Island, and with the right updates, it pushes further into Wano.

If you are looking to optimize your game with the latest NSP updates and DLC, you’ve come to the right place. Whether you are trying to unlock the "100% Clear" status or just want to play as the latest characters, here is your complete breakdown of what the updates offer and how to manage them.

Why Updates Matter for Pirate Warriors 4

Before diving into the specific characters, it is important to understand why keeping your game updated is crucial. Pirate Warriors 4 is a massive game, but the base cartridge or initial download has limits.

Bug Fixes: Early versions had issues with camera clipping and freezing during massive Kizuna Rush attacks.
Balance Changes: Some characters (looking at you, Garp) received damage buffs/nerfs in patches to make the "Strongest Difficulty" more manageable.
Character Unlocks: The DLC characters do not exist on the base cartridge. You need the update data and the DLC files to access them.

What’s Included in the NSP Update / DLC Pack:

5. Quality of Life Free Update (for all players)

Performance mode toggle (60 FPS target for Switch)
Auto-save before boss battles
Rebalanced ally AI (less idle during crowd control)

Latest Game Update (as of 2025)

Ver. 1.4.0+ includes balance tweaks, bug fixes, and support for the most recent Character Pass content.
The update is required for online co-op stability and to access new playable characters.

One Piece: Pirate Warriors 4 — NSP Update & DLC (Informative Story)

In late 2020 and beyond, One Piece: Pirate Warriors 4 expanded from a straightforward Musou-style retelling of the Wano and other arcs into a living, growing package through updates and DLC. This is a concise, informative story of that evolution focused on the NSP (Nintendo Switch Package) releases and downloadable content.

How to Install One Piece Pirate Warriors 4 NSP Update DLC on Atmosphere

If you have a hacked Switch, follow this strict installation order. Doing this wrong will give you "corrupted data" errors.

Requirements:

CFW (Atmosphere 1.5.0+ or higher)
Sigpatches (updated)
A title installer (DBI, Tinfoil, or Awoo Installer)
The correct order of files: Base NSP -> Update NSP -> DLC NSPs

Step-by-Step Guide:

Source the Base Game: Find a clean One Piece Pirate Warriors 4 [BASE].nsp. Install this first via USB (using NS-USBloader) or SD card.
Install the Latest Update: As of writing, the latest stable version is v1.8.0. Do not skip versions; install the latest cumulative update NSP.
- File name example: One Piece Pirate Warriors 4 [UPDATE][v1.8.0][01008F6008C56800][US].nsp
Install the DLC Unlocker: Standard DLC NSPs require an unlocker. Look for the "DLC Unlocker for Onigashima Pack". This file is usually only 1MB but tells the game you own the Character Pass.
Install the "AddContent" Files: If you downloaded separate NSPs for each DLC pack (e.g., "Yamato DLC.nsp"), install them one by one. Order does not matter here.
Launch in Hekate/CFW: Boot the Switch, open the game. Go to "Dramatic Log" -> "Additional Episodes." If you see the Onigashima raid, the One Piece Pirate Warriors 4 NSP Update DLC installation was successful.

1. The Base Game & Day One Patch (v1.0.0 – v1.1.0)

The original NSP included roughly 40 characters. The day-one patch stabilized frame rate dips (a major issue in handheld mode) and added the "Dramatic Log" scenario editor.