This is probably the first final fantasy action fighting game (unless you count Ergheiz which was more fighting an less action). The story revolves around the protagonists and antagonists of the first 10 Final Fantasy games, battling it out for control of the world under the guide of their respective gods - Cosmos and Chaos. The rpg elements are there but the game is centred on action battles (real time) with the ability to run up, along and down walls. Fly across huge gaps, ride railings etc. There is also a star-studded cast of voice actors famous in the anime/video game world incl. Johnny Yong Bosch, Christopher Sabat, Laura Bailey, Veronica Taylor, Roger Craig Smith and more.
One issue I would have with this game is that it is not as balanced as it should be. Some characters are too weak or slow to be a proper threat, and others will nearly always win the game for you. Overall a great game.