Zombie Defend

Story Background --------------------------- In 2020, a group of terrorists have developed a new biochemical techniques successfully. They use this technology into a biological weapon and want to control the world. This weapon would spread biochemical virus through the air and make a human lost their mind, stronger their muscle and make them become bigger. These infected humans cannot control themselves and they would search for the normal humans and eat them. They become a monster and act like a zombie. The weapon is not fully successful as there are some humans have antibody inside their body and have not been infected with these biochemical virus. But many of these group of human have been eaten by the zombies. For those who are survived, they build some castle and live inside the castle to protect themselves. The zombies know the humans are inside the castle. They try to break the castle and eat all the humans inside. In this danger situation, the humans swear to protect the castle so that they can survive. They use machine guns, cannon and missile to kill the zombies and prevent them get close and destroy the castle.