Alright so I'm a pretty big fighting game fan.
I would definitely say KOF 13 is up there at expert level. It's pretty hard to get into if you are new to the fighting scene and the fact that you need to master three characters to actually fight kind of makes it very time consuming. But it is definitely very rewarding if you like fast faced long chain combo type fighter, unlike street fighter which is not very combo heavy.
I would recommend you play Blazblue Continuum Shift Extend (By makers of Persona 4 Arena) if you want a deep, fast paced, competitive fighting game, but one that does not require as much time to master as KOF since you only really have to learn one character to play with others. Plus the characters in BB are VERY unique and each of them have completely separate gameplay mechanics all on their own. Its definitely worth checking out.
