Zombies declared war on the people, it happened when humanity began to recover from the epidemic and created a vaccine. The living dead realized that there was no further replenishment in their ranks, and that soon they were in for a real extinction. This pushed them to radical action. They want to steal the vaccine and again dominate the planet. You will be in the game Zombie Wars to protect your site from paratroopers zombies. They descend and if they reach the ground, they will launch an attack. Point and shoot, you have an unlimited number of cartridges. But still, do not miss the opportunity to pick up falling submachine guns or grenade launchers, with their help you will quickly deal with monsters.