Koei later created a new game as a spin-off and added the word shin ( 真, true, genuine) to the beginning of the title to differentiate it from its predecessor. The first game in the series, titled Dynasty Warriors in English and Sangokumusō in Japanese, was a fighting game, a separate genre from the rest of the games in the series. The series is a spin-off of Koei's turn-based strategy Romance of the Three Kingdoms series, based upon the Chinese novel of the same name, which is a romanticised retelling of the Chinese Three Kingdoms period. 'True Three Kingdoms Unrivaled') is a series of Japanese hack and slash action video games created by Omega Force and Koei (now Koei Tecmo). Dynasty Warriors ( 真・三國無双, Shin Sangokumusō, lit.