I'm going to post about the game that I think will be one of the best FF games ever... I just hope it is released in english, because otherwise I'll just have to learn japanese in order to play it!
WARNING: SPOILERS OF THE ENTIRE GAME
http://www.youtube.com/watch?v=dUGWY0tAPsE - Opening english sub
http://www.youtube.com/watch?v=a9nLVqutbks - Another opening in japanese
http://www.youtube.com/watch?v=V8g9c54BSXU&feature=fvwrel - trailer
http://www.youtube.com/watch?v=7tEZCc-nC4I - Gameplay
http://www.youtube.com/watch?v=aIxEiAcIjqs&feature=player_embedded - Trailer
http://www.youtube.com/watch?v=csLSv4Z10B8 - Prelude
The story is the following: there are four realms, called: Suzako Fiefdom of Rubrum, Milites Empire, Lorican Alliance, Kingdom of Concordia. Each has a crystal that gives magic power to the realm and to some people.
The Milites Empire's army, under the command of Marshal Cid, invades the other coutries, violating a peace agreement set by the ancient I'cie (I'Cie are something like gods, they have a ative part in FF XIII). He does not conquer the Suzako Peristylium, tough. The army finds a way to nullify the magic of the Rubrum crystal, which powered Suzako, and because of this, the Peristylium falls to Cid's domain. But not everything is lost, since a group of students from the Peristylium Suzako Magic Academy, the Class Zero, still has the power from the crystal, while all other students lose theirs. This group of 12 students, later joined by two more, join the "Operation Apostle", to free the capital of the foreing domain.
Gameplay: (Source ~~> http://finalfantasy.wikia.com/wiki/Final_Fantasy_Type-0)