When the disturbance of the radiation caused by a nuclear war occurred, Dr. J intelligent robots got a mission to develop vaccines to help the world.
However, there was a grave mistake during the trial. The vaccine spawned a new breed of zombie. Big chaos will occur. Only you can stop it.
Do not let the zombies spread themselves. Take a group of three or more of the same species to destroy them.

It won’t be easy because they will resist by breeding more and more faster. You will have to deal more and more faster as well. Your score depends on how many you could tackle.