Global Wasteland: Shelter Unlimited Upgrades

When a natural disaster comes, all the people travel through the wasteland world and face the challenge of death and survival! Horrible acid rain, monstrous floods, cities burning from the sky, global glaciers, super radiation... No one is immune! Human beings can only build shelters if they want to survive., accepting the baptism of natural disasters one after another. Fortunately, Sumo awakened the doomsday survival system! His shelter can be infinitely upgraded! [Wooden Door] [Iron Door] [Alloy Door]... [Wooden Spear][Wood Spear] [Electromagnetic Spear]... [Diesel Generator] [Biological Generator] [Thermoelectric Generator].... While everyone is rushing to prepare for the next disaster, Somo has alreadyFull of equipment, he roams the wasteland world. We are still lighting oil lamps, and other people’s refrigerators are used! I heard that the walls of his shelter are