Dynasty Warriors 9 is a hack-and-slash video game developed by Omega Force and published by Koei Tecmo. It was released in February 2018 for PlayStation 4 Windows and Xbox One. It received generally negative reviews from critics. A strategy-focused expansion titled Dynasty Warriors 9: Empires was released in December 2021 in Japan and worldwide in February 2022 for the PlayStation 5 PlayStation 4 Stadia Xbox Series X/S Xbox One Nintendo Switch and Microsoft Windows. Dynasty Warriors 9 is an open-world hack-and-slash game played from a third-person perspective with stealth elements. The game revamps the gameplay of the series with the introduction of the open-world environment. A traversable map of China is implemented which the player can freely roam on foot horseback or boat the game focuses on liveable environments such as cities and towns as well as places where large battles take place. The characters' move-set combinations are also revised.