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 RPG/fighting game developed and published 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 2008. The game features characters from different Final Fantasy games and centers around a great conflict between the heroes and villains, as the god of discord, Chaos, tries to wrest control of their worlds from the forces of good. It was released in Japan on December 18, 2008, in North America on August 25, 2009, in Australia on September 3, 2009 and in Europe on September 4, 2009. It was then re-released as an international version in Japan, based on the North American port, as Dissidia Final Fantasy: Universal Tuning, on November 1, 2009. Dissidia was well-received commercially and critically, with positive reviews and sales of over 1 million copies worldwide.
(got the info from wikipedia)
Gosh. i feel like im getting addicted with final fantasy dissidia. it was way too awesome! whoa. at firts i dont know how to play that game, but good thing my brother teaches me how to play it. and i was like. whooa! its cool i think im getting addicted to it. :))