One Piece: Pirate Warriors 4 on the Nintendo Switch is a high-octane "Musou" (Warriors-style) title that offers a satisfying, if technically compromised, way to experience the grand scale of the One Piece universe on a portable device. A New Standard for Musou Combat
Storage Requirements: The base game on Switch originally required approximately 13.3 GB. However, the Next-Gen Upgrade Pack (released November 21, 2025) significantly increases this, requiring a 38.1 GB install. One Piece- Pirate Warriors 4 SWITCH NSP -EUR JP...
: You can find import versions (like English-subbed Asian releases) at retailers like JP Edition : Known as ONE PIECE海賊無双4 , it can be sourced from specialty importers like Important Safety Note One Piece: Pirate Warriors 4 on the Nintendo
You can install NSP files using several popular homebrew tools: Massive enemy hordes – defeat hundreds per mission
In addition to the story mode, the game also features a variety of other gameplay modes, including a free play mode that allows players to battle through waves of enemies in a bid to earn high scores, and a co-op mode that allows two players to team up and take on the game's challenges together.
The most reliable way to obtain the game digitally is through the Nintendo eShop : Approximately 13.8 GB. Language Support