Dynasty Warriors (真・三國無双, Shin Sangoku Musō, Shin Sangokumusou in Japan) is a game in the Dynasty Warriors series for the PlayStation Portable, created by the game development company Koei. This game was released as a launch title in Japan on December 16, 2004 and as a launch title on March 17, 2005 in North America, and September 1, 2005 in Europe. The sequel to this game is Dynasty Warriors Vol. 2.