Dynasty Warriors 9 is a 2018 hack-and-slash action game developed by Omega Force and published by Koei Tecmo. Set during the Three Kingdoms era of Ancient China, it reworks the series’ classic one-versus-thousands combat into a single open-world map. Players follow the stories of major kingdoms through a large cast of playable officers, using the new State Combo System while exploring battlefields, completing missions, and reliving historical conflicts on a broader scale.