This game is great.. it is not shallow. You will easily be swept up in the atmosphere of it before you even play a real level. It makes up for how horrible the last spin off game was (Dissidia) and completely restored my faith that besides there basic rpgs (which are amazing) and strategy games (which I'm not a fan of so i lose there...) That there will still be some great games to come like there have been in the past I.E. Dirge of cerberus and Crisis core.
this game is FUN! It's amazingly deep for a rhythm game. From choosing a 4 character party. EXP. Leveling up. Items. abilities. Repeatability is high with Street Pass functions, Challenge mode, Dark Notes, and DLC. The DLC is cheap and gives a lot more. Even without DLC this game is DEEP. You can do a clean run through of all the games once in a little over 3 hours, so it is a MUST RENT. but if you love Final Fantasy Music (I never even played a game) and you love the replay value of such a deep system. I Say KEEP IT? Buy IT!