Despite many calling this game unplayable, I beg to differ. I won on all three difficulties, so it's good. That doesn't mean the game is perfect, far from it, but it's more fun then others on Newgrounds. First and foremost, the dev should really fix the shooting mechanics. You have to aim in front of the zombies when they get near the doors, which is really annoying. Second, hard should make zombies faster and stronger. For me it just made the game longer. But both of these I feel can be easily fixed, and this is still a more then decent game. Good work, AlienPlay!