Dissidia: Final Fantasy (ディシディア ファイナルファンタジー, Dishidia Fainaru Fantajī?) is an action game produced by Square Enix for the PlayStation Portable as part of the campaign of the Final Fantasy series 20th anniversary. Information on the game was first released during the "Square Enix Party" event of May 2007. The game features characters from different Final Fantasy games and centers around a great conflict between the heroes and villains as the god of dischord Chaos tries to wrestle control of their worlds from the forces of good.
In Dissidia, there is an ongoing conflict between two gods: Chaos, the god of dischord, and Cosmos, the goddess of harmony. The two gods have battled for eons, until Chaos summoned a number of villains from other universes to serve him. These villains built an army and decimated the forces of good, and the balance of power tipped in Chaos' favor. The few survivors of the forces of good have banded together to strike back at Chaos and his forces and return order to the universesNOTE
This game is in Japanese