
In case you don't know what ATB means/is, I found this link which is quite useful:
http://finalfantasy.wikia.com/wiki/Battle_system
Some info about the game:
Basically in the game there's this map, and without going too much in details to avoid spoilers, you'll need to fight battles from each "elemental region" in a progressive level of difficulty. As you fight battles, you get access to more powerful minions.
The game characters never take part directly in the battles. They act like the Heroes Of Might & Magic heroes: they summon minions and also can use skills/abilities (like spells). The minions can level up, but differently from traditional RPGs, you can summon more than 1 of each type (with some limits due to mana cost).
So for example you could summon 5 Will'o'wisp (the cheapest Air creature) but maybe only 1 Black Dragon (one of the most powerful ones).
Currently I'm more inclined to go with the Pokemon-style game myself. I think could be different from my other games, and if I go with tag-team battles (you can replace dead creatures during the fight) it could get very interesting from strategic point of view
