Earth in the year 20xx, Hades Comet crashed directly into the Earth's atmosphere. Due to intense friction with the atmosphere, comets explode and fragments everywhere , the debris plunged into the ground, destroying almost the life there . It’s not worst thing, comet debris contains a number of strange minerals that emit a powerful radiation that instantly turned the people living in nearby area into Zombies The Earth Union meets and decides to dig deep into the earth to collect all debris from the comet and return it to the universe. With positive contributions and maximum trust, you are elected as the leader of the disaster recovery plan to avoid infecting normal people, you make the zombie victims to dig and collect debris in the hope of rescuing survivors of the world. How to play - Tap into zombie to make them work - Hire manager to do your work - Upgrade your mine - Expand your mine - Make profit while saving the world