I have to disagree with the other reviewers. There's not much here aside from its fantastic title. So sorry to rain...
I MAED A GAM3 W1TH Z0MB1ES!!!1, as indicated in previous reviews, is a simple game based on a very simple premise: Zombies are cool to kill - and more zombies are cooler. In this game you stand as a lone-gunman against a constant onslaught of zombies, doing your best to stay alive long enough to grab the next weapon upgrade. It's frenetic gameplay for sure... but something feels lacking...
What's lacking is aesthetic sensability. The zombies aren't remotely horrific - in fact they're hard to distinguish as zombies all together (other than the title points it out for you). The board/world you play on has almost no redeeming qualities. It's almost like the developer just threw in some boring tiles because they ran out of time. And of course the gameplay is simple - while in many arcade or indie games such simplicity is turned from a weakness into a plus, but here it just means for me that i'm playing a simple game with no visual stimulus and little other reason to continue on. High scores be d*mned, I'd rather play a game I enjoy.
Sure for $1 (or 80 MS points) this game isn't a bad way to spend your money - that is true. But my review is not how much game you get for what price. It doesn't make cost into account at all. With other shooter options (Border Wars, Leave Home, Amniotic) and other zombie options (Twin Blades), unfortunately my amusement with I MAED A GAM3 W1TH Z0MB1ES!!!1 ended where it began: with the title.