It was fine, until you lose a wave. It doesn't give the option of spending your upgrade points, just "restart so you can lose again" crap.
The enemies were basically the same thing, just different colors meaning how far away they'll attack. Blah, not much diversity there, eh?
I had over $20,000 and nothing to spend it on. Bought everything. The machine gun was total bullshit - the accuracy (bullet spread) was literally a 90 degree angle. In other words, the machine gun is a retarded weapon and the assault rifle is the best.
The way the screen clogs up with blood is cool - unless it blocks your vision to the point where you can't see anything. Come on, please test this shit.
The problem with this game is repetition and unbalance, and no ending to the point where you just get to a wave that you can't beat. That's the reason for my 4/10. There are much better defense games that offer more options and playability than this... so my question is: what did this game bring to the table? Same old.