Doomsday Survival: Starting from Scratch

A global strange red rain suddenly descends. The rainwater carries an unknown deadly virus. Humans infected with the virus mutate rapidly and become irrational zombies that only know how to bite flesh and blood. At the same time, animals and plants around the world also undergo horrific mutations. Natural resources are rapidly depleted. The human social order completely collapses. Electricity, water sources, and the Internet are completely interrupted. Civilization has regressed to a barbaric era of survival. Crisis and death are everywhere.