"This is a fantasy based on reality."
—Tagline
Final Fantasy Versus XIII is an action role-playing game currently under development for the PlayStation 3 which, alongside Final Fantasy XIII and Final Fantasy Agito XIII, makes up the Fabula Nova Crystallis: Final Fantasy XIII compilation. However, the game has no physical connections to the rest of the compilation, and will feature a wholly independent story and a unique visual design.
Final Fantasy Versus XIII was first announced at E3 2006 alongside Final Fantasy XIII, and will be the second game to utilize Square-Enix's Crystal Tools engine. Final Fantasy Versus XIII follows the story of a mysterious protagonist, Noctis, who is a protector of the last remaining city in the world with control over crystals.
- http://finalfantasy.wikia.com/wiki/Final_Fantasy_Versus_XIII