Run Riot in a Zombie Town
This is why newgrounds rocks. The graphics are basic, but that's what makes this so much easier to concentrate on. All the stimuli of vibrant scenes hitting from every angle can often be off-putting. The concept of shoot-for-money to buy more weapons and upgrades never gets old.
The only whinge I have on Zombie Hord3 is the control of the car. It was very slow to get going and if you needed to go from forward into reverse , before you knew it you were surrounded by unwanted greenies, and winged vermin, forcing you to exit the car, shooting them off. I guess the fact you can run them down more than made up for it.
Overall this is one helluva cool, addictive game. More zombies, more zombies!