Great look and feel, but it's clearly ported from a different system. The controls dont match up with the 3DS buttons and it uses only the digital directional pad, which I am not used to at all. As a fighting game, DOA was a lot more involving.
The game feels rushed, with no sleep mode available (it just keeps running with the screen and sound turned off), which hurts it as a portable title due to the lack of an "anywhere" pause function that sleep mode brings to games (Abyss hurts from this the most imo). The frame rate stutters and slowdowns occur when there is a modest amount of air combos and jumping, though this is easily remedied by turning off the 3D. Characters still look great even at such a low resolution, but the text sometimes looks squished and can occasionally be tough to read.
While I don't think I need to describe the game itself (um... it's a 2D fighting game), I will however state that anyone who's played a fighting game outside of Super Smash Bros. can enjoy it, the large roster of characters guarantee you'll find someone that suits your play style, and there are enough modes and extras to keep you busy with the game, all of which I found interesting/enjoyable.
This isn't a definitive version of the game, but if you...
-Want BlazBlue on the go but don't own a PSP or the upcoming Vita, go for it.
-Have an interest in the game and just want a taste of what it's like, try it out but other ports are superior.
-Just enjoy 2D fighters? Give it a whirl!