Best Mortal Kombat to date, even though it has some flaws.
However, there are a few negatives in this game, only 2 of which are worth mentioning. The jumping button is EXTREMELY sensative for some controllers. Occassionally, I will be in a match and I jump and the control stick gets "stuck" and my character continues to jump several times. This flaw can easily be the result of you losing a match. I have also tried quite a few controllers, some of which weren't even mine and I still encountered the problem.
The other problem worth noting is that Shao Khan is beyond annoying and overpowered. The only true way to beat him is to spam a ranged attack at him from the other side of the arena. I have tried going head to head with Shao Khan in melee range and he destroys me in seconds, most of his attacks are also unblockable.
In a nutshell, Mortal Kombat 9 is by far the best in the series, and despite some minor flaws, it is still an amazing game that will keep you busy for hours and hours on end.