I used to have it on PSP, it's a tower defense game, but with a Final Fantasy twist. You place units along a path which are of a Job Class from the series, like Soldier, White Monk, Dragoon etc, and they do whatever they are best at i.e. Soldiers are strong physically but can't attack aerial units, White Monks can attack multiple units but also can't target aerial units, Dragoons are slow but deal huge damage to ground and aerial units. Basically you have to survive a certain amount of waves of enemies depending on the difficulty.
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