ONE PIECE: PIRATE WARRIORS 4
by Koei Tecmo · 26 Mar, 2020
639 downloads
About the Game
The PIRATE WARRIORS series has successfully combined the popular anime ONE PIECE with the thrilling action of the WARRIORS series to create a worldwide phenomenon selling more than four million copies!
Based on the concept of "fighting hordes of enemies while adventuring with trusted allies," experience awesome ONE PIECE action lifted straight from the anime!
ONE PIECE: PIRATE WARRIORS 4 is the latest evolution of PIRATE WARRIORS action! Based on the concept of "experiencing a real ONE PIECE battlefield," buildings will come crashing down during the action and attacks will throw up smoke and dust, placing you in the thick of the ONE PIECE world!
Injecting fresh elements that couldn't be achieved in previous entries has now realized an even more thrilling brand of PIRATE WARRIORS action!
Screenshots
10 images
Version Information
Steam Patch Notes
Official update history
Save Error
We regret that some of you are experiencing saving issues.
A patch is on the way, meanwhile we invite players affected by this issue to try the fix below:
1. Right-click on 'ONE PIEC PIRATE WARRIORS 4' in the Steam Client, then navigate to 'Manage' -> 'Browse Local Files', and right-click on OPPW4.EXE, and choose 'Properties' -> 'Compatibility', and check 'Run this program as administrator', then click 'Apply'.
2. Start 'ONE PIEC PIRATE WARRIORS 4' via the Steam Client, and play until you receive the 'Failed to save' error.
3. Go to 'C:\Users' (Change 'C' to whichever drive letter Windows uses)
4. Find a folder named 'Ïîëüçîâàòåëü' or similar, then navigate to the 'AppData' folder inside
5. Find the 'Local', which should contain the 'BANDAI NAMCO Entertainment'
6. Copy the 'BANDAI NAMCO Entertainment' folder to 'C:\Users\ [Your Username] \AppData\Local', resulting in a folder path similar to 'C:\Users\ [Your Username] \Appdata\Local\BANDAI NAMCO Entertainment'
Not enough space
In case you get *not enough space to save* issue - you can try to fix this either by freeing some space on a drive where your *Users* folder is located ( and Windows as well usually ), or Right-Click on your game in steam library - Properties - Local Files - Verify Integrity of Game Files. It should work in most cases.
Current Release
Build 21009213
Uploaded Oct 13, 2026
System Requirements
How to Install
OPPW4.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
Needed when extracting (WinRAR / 7-Zip) — not a site login.
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Download ONE PIECE: PIRATE WARRIORS 4 for PC with a direct link or via torrent. Get the full version of ONE PIECE: PIRATE WARRIORS 4 for free. ONE PIECE: PIRATE WARRIORS 4 is a Action released by Koei Tecmo.