Square has revealed an all new trailer for Final Fantasy Agito XIII for the PSP.
Like Final Fantasy Versus XIII, Agito is a separate piece of the Fabula Nova Crystallis: Final Fantasy XIII compilation of games. These games all take part in the Final Fantasy XIII universe although they are separate from each other and from the main game which is simply titled Final Fantasy XIII which is considered the main game in the series and will appear on PlayStation 3 and Xbox 360.
The trailer is mostly computer generated footage although there is a smattering of gameplay snippets near the end of the trailer.
The game uses an ATB (Active Time Battle, as debuted in Final Fantasy VII) system similar to that of Crisis Core: Final Fantasy VII and will allow you to control multiple characters with spells and special attacks assigned to one of the face buttons. There will be twelve students in the game and each of them will have their own summon creature which can be swapped out and controlled by the player (sounds like Final Fantasy X).
As far as the Summons are concerned they will be a big part of the game (as in all Final Fantasy games) although Odin is the only Summon confirmed so far.