Zombie Fighter:Battle Survival

Your main objective is to survive from zombie invasion. There are undead zombies everywhere and nobody knows why people become living dead zombies after they died. Most of the survivors believe that Zombie Apocalypse started after a military scientific experiment. An incident caused deadly zombie virus, a biological weapon to spread all over the world before anti-virus founded. If you cant survive and die, you will become a zombie, a member of undead zombie inferno army. Survive to find out the source of this mysterious epidemic zombie apocalypse and zombie invasion, Kill to survive and become...