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.