Is Zombie Survivor down?

Welcome to Zombie Survivor: Undead City Attack - prepare to survive zombie outbreak in this FPS shooter game! After an undercover science experiment went wrong, a mysterious deadly virus has broken free from a lab, turning all the people on its way into mad zombies! This modern world plague has spread all over the world, zombie apocalypse began on every continent and every country, the biggest cities have become battlefields between undead monsters and the last survival zombie killers. The biggest zombie outbreaks happened in the major cities - New York, London, Rio de Janeiro, Mexico and Johannesburg are on the brink of a collapse. A few survivors, who was Zombie Survivor: Undead City Attack, had to hide in the underground subway tunnels. Your mission is to travel to those places, fight against zombies in the streets, protect those who got lucky to survive and deliver the blood samples to the lab to create an antivirus. Now it's only you who can give humanity a chance to survive! Only few people, whose DNA has a rare gene, are immune to the virus and their blood can be used to create a vaccine. So, while most of the survivors are hiding underground, the bravest of them are stepping outside to face mad zombies at the streets and make their way through to the nearest laboratories and create a vaccine. But only those, who could be called a true zombie killer and zombie hunter are able to resist and defeat hordes of mad zombies, running at them from every direction! And you were destined to become such a zombie killer! Sometimes you'll be left alone on city crossroads, in the middle of local zombie outbreak, and your mission will be just to survive there. Hordes of zombies will run at you from every direction, so keep your aim steady and try not to run out of ammo. In other missions you are sitting safely on the roof, and your mission will be to protect scientist or some innocent people who got trapped by zombies and left to die. A good sniper rifle wil...