Warriors Orochi 2, known in Japan as Musō Orochi: Rebirth of the Demon Lord (無双OROCHI 魔王再臨, Musō Orochi: Maō Sairin, lit. Unmatched Orochi: Rebirth of the Demon Lord), is a 2008 video game developed by Koei and Omega Force for the PlayStation 2. It is the sequel to Warriors Orochi, a crossover video game of the Dynasty Warriors and Samurai Warriors series. The game was released on September 23 in North America and September 19 in Europe. A version for the Xbox 360 was released on September 4, 2008 in Japan, and alongside the PS2 releases in North America and Europe. A PlayStation Portable version has been released in Japan, North America and Europe.