It's a fighting game at its core, but with additional emphasis on utilizing space in true 3D environment, resource management, and RPG build. And it has a singleplayer mode way oversized for a fighting game, but just meaty enough for true Final Fantasy fans. Have you ever wondered "what would Cloud say when he meet Zidane"? Well, here's the fan service you need. No, I'm not saying the writing is actually good, but that's not important for fanfic, is it?