Griffin McElroy of Joystiq writes:
"The creators of Final Fantasy XIII have been notoriously tight-lipped about the Fabula Nova Crystallis trilogy, a series comprised of FFXIII, Final Fantasy Versus XIII and the PSP-exclusive Final Fantasy Agito XIII. During a GDC panel titled "The Crystal Mythos," director Motomu Toriyama gave a few scant details about the other two branches of the trilogy, and the few similarities connecting the entries in the franchise's 13th series."