good start for a defense game but...

i would suggest implementing mouse aiming and firing, have the zombies get closer to doors before doing damage to the doors, have some sounds letting you know their attacking, as faras the shop goes, have a break in the attacks like the other defense games do, there you can buy the upgrades and stuff

Very Good

this was allot of fun, i got bored and let myself die at 1000 kills lol, i was goin to complain about the left side breaking too quick but after playing with the zombies coming in from one side at a time rather then them all at once i thought it acctualy worked pretty well, nice game :D maybe try to make some kind of campaign or other choices to make it more interesting

Killing Zombies Over and Over and Over and Over...

The game plays well, but it becomes repetitive very fast.

Whoo-hoo zombies....

....but boo poor controls. I have no idea how hard it must have been to make this, but since I can't make anything game-like (and I have tried) you being able to make this already gains respect from me. Controls were frustraiting though. I stopped after a while because of that.

Good!

It was good, but had the potential to be awesome. The graphics could definitely be better- (I can help in the next version! :D) THe sound got repetitve, but otherwise it was fun. The shop got kindof annoying when you would accidently step on it. Also there should be more weapons and crap in the next version. :)