IMPORTANT: You need Internet Connection and Google Play Games app installed for playing this game. For some unknown reason, the zombie virus has taken over the world and zombies are everywhere. The question is; This pandemic is unnatural? There was always a suspicion about this subject. While running away from the zombies, you find a manhole cover and jumped on, keep yourself safe in the sewer system. There are enough items in the sewer to sustain your life. But this sewer is going somewhere,d