Sometimes in the near feature, an unknown virus infects the Earth. People die every day. Zombies are everywhere on the streets. Your city is filled with walking deads. You, as a trained professional solider, are one of few survivors left in the city. Your mission is to use your weapons to kill as many zombies and save as many survivors as you can and bring them into the safe house. You are the last line of defense of the humanity. Are you ready for the ACTION of MAYDAY?