Blast: Dissidia is the culmination of the first ten Final Fantasy main series games. Rather than in a straight up RPG, like the Tales series has done with its universe-blending titles, Square Enix united its main characters and villains from the Final Fantasy series in one RPG/fighting game. Cosmos, goddess of harmony, and Chaos, god of discord, are waging a war for control of the universe. The balance tips in Chaos's favor when he summons villains from throughout the Final Fantasy universes to aid him in his quest to defeat Cosmos. In retaliation, Cosmos summons the heroes to defend her and help her vanquish Chaos. As many heroes are killed, the warriors are brought to the brink and Chaos his final assault. It's up to the heroes to band together and defeat Chaos.