Samurai Warriors: State of War (激・戦国無双, Geki Sengoku Musou) is a portable version of Samurai Warriors. However, it is not a straight conversion. It is more like Dynasty Warriors for the PlayStation Portable, giving it an "Empires" style of playing. There are four main armies for the player to participate in: the Takeda (Western), Uesugi (Eastern), Nobunaga, or the solo army. Completing the game with these four factions unlocks the final stage in the game. It guest stars characters from Dynasty Warriors 4. The game features a Story mode, Free mode and VS mode.