Originally released in March 2020, One Piece: Pirate Warriors 4 shattered expectations. Developed by Koei Tecmo's Omega Force and published by Bandai Namco, the game currently sits at over worldwide across PlayStation, Xbox, PC, and Nintendo Switch. While the core mechanics of "hack-and-slash" chaos are timeless, the reason the game appears consistently in NSP searches is the sheer volume of post-launch content.

Classic musou: mow down hundreds of pirates, marines, and beasts with flashy combos, special attacks, and “Full Force Burst” modes.

Unlike standard eShop downloads, NSP (Nintendo Submission Package) files for Pirate Warriors 4 are notoriously finicky for three reasons:

2. Eliminating the "The Software Was Closed Because an Error Occurred" Crash