Dissidia Final Fantasy is a fighting game with action role-playing elements developed and published by Square Enix for the PlayStation Portable as part of the campaign for the Final Fantasy series' 20th anniversary. It was released in Japan on December 18, 2008, in North America on August 25, 2009, and in Australia and Europe in September. It was then re-released in Japan, based on the North American version, as Dissidia Final Fantasy: Universal Tuning, on November 1, 2009.
The game features characters from different Final Fantasy games and centers on a great conflict between Cosmos, the goddess of harmony, and Chaos, the god of discord. The two summon multiple warriors to fight for their sides in their thirteenth war. During the story, the player controls the ten warriors chosen by Cosmos, the protagonists from the first ten Final Fantasy games, in their journey.
A follow-up titled Dissidia 012 Final Fantasy was released in March 2011 and features several new characters and gameplay features.