Haven't done one of these in a couple years.. I've been revisiting everything Mortal Kombat 9 has to offer because I had to replace my xbox hard drive which wasn't fun considering I had to beat Shao Kahn twice in story mode (probably the most punishing-yet-rewarding game experience I have ever dealt with besides the last level of Jedi Outcast). Since I normally play first person shooters like Halo Reach, MW3, BF3, etc, this was a great change of pace since I have never been a fan of fighting games until exploring most of Mortal Kombat's "kotent;" I haven't even scratched the surface. The challenge towers are also mostly challenging in a good way.. There is so much variety in this game that its unbeliable how much effort and creativity was placed in MK9.. Even the DLCs are worth checking out at 400 MS points per character (I believe there were 5 DLCs released).
Even if you aren't a fan of fighting games, you will be impressed with MK9. If you haven't picked it up, I highly recommend it, just be sure to save up on controllers.. I'm not joking here; I accidently cracked my wireless controller during a heated fight with Shao Kahn (who is one of the cheapest bosses of all time, he drops it like its hammer-time) and shockingly it still works.