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!
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2026-02-27
Monthly Recap - February Edition
Even though February is the shortest month of the year it is still quite eventful in the gaming industry and there were quite a few things going on around it! We have selected a few of the more intriguing stories about some of the bigger game title hits that are worthy to be included in our monthly recap, as well as some memorable comebacks that you should not miss out on! Get ready for the rumble as we set out…
Football fans unite and gather for this one as this year’s edition of one of the biggest gaming titles in the sports category – EA Sports FC 27 is coming and rumors around the field have it that there would be an open world to be introduced in the gameplay! We wanted to join the discussion and find out if that is actually a necessity in a sports game, where the main focus should be on the matches…
This game does not default to external Bluetooth/USB controllers on Deck, and may require manually switching the active controller via the Quick Access Menu
All functionality is accessible when using the default controller configuration
This game shows Steam Deck controller icons
In-game interface text is legible on Steam Deck
This game's default graphics configuration performs well on Steam Deck