As bad as the first 99N seemed to me at first, with it's blatent repetiveness and repeating levels over and over, i was hooked pretty quickly and grew to love it.
This was much the same for this game except there have been a some changes for the better. The basic concept is still very much the same but there are now new unique moves that can be equipped which is an obvious improvement from the 2 moves per character before. Another change is that they've added an xboxlive multiplayer option however i've still not tried it as it seems impossible to get a game.
I've rated it 4 compared to the first game, if you liked ninety nine nights you'll definately love this but in general it's probably a 3 out of 5 at best.