The fictional events of the game begin when the Serpent King Orochi created a rift in time and space.
See also: List of Samurai Warriors characters and List of Warriors Orochi characters A PC version was released in North America on March 25, 2008. The game was ported to the PlayStation Portable, released in Japan on February 2008, March 25 in North America, and March 28 in Europe. The game came out for the Xbox 360 in Japan on September 13, and the European version came out on the same date as the PlayStation 2 version in the North America. The game was released on March 21, 2007, in Japan, September 18 in North America, September 21 in Europe, September 27 in Australia and September 28 in New Zealand. It is a crossover of two of Koei's popular video game series, Dynasty Warriors and Samurai Warriors (specifically Dynasty Warriors 5 and Samurai Warriors 2) and the first title in the Warriors Orochi series. Warriors Orochi ( 無双OROCHI, Musō Orochi) is a beat 'em up video game for PlayStation 2 and Xbox 360, developed by Koei and Omega Force.