1) It is open world
2) Character design rocks
3) The theme of the game looks really cool, on par with FFVII and FFVIII. It is a dark theme not some b$ about friendship like FFXIII
4) Real time combat....AT LAST!!
5) You can ride tanks, robots, and other vehicles an use them to explore the environment and fight against enemies in real time.
With those 5 items, VersusXIII has the potential of being the best final Fantasy EVER! And most people and fans know that, that is the reason behind the crazy hype.