Catty Catty Catty

As disaster was about to strike, a group of survivors transmigrated into a desolated world and were challenged to a game of survival. From terrifying acid rains, to endless natural disasters, the heavens burn while the earth scorches, radiation is rampant, and nobody is spared from the dangers of this hellscape. The only way one survives is by building a shelter and slowly upgrading it in hopes of surviving another day. 
Luckily, Su Mo awoke a Doomsday Survival System that allowed him to infinitely level up and upgrade his shelter! The main shelter wooden door can be upgraded into a metal door, which in turn upgrades into a composite gate; the wooden spears can be upgraded into bronze spears, which eventually upgrade all the way into electromagnetic spears... While everyone struggled to survive, Su Mo was fully loaded, and well equipped to dominate the post-apocalyptic world. 
"While some of us are lighting oil lamps, he's been using refrigerators!" 
"The walls in his shelter alone are tens of meters thick, it's the safest place on this planet."
"Before I die, I wish to spend one day in his shelter..."

EndlessFantasy Translation 

My Post-Apocalyptic Shelter Levels Up Infinitely!

LambSheepMutton

Before he came here, Su Mo had a few speculations, but it could have been anything really.

Was it a high-dimensional civilization's entertainment broadcast channel for the masses?

Was it some sort of dimensional scavenger that had lost control?

Was it a smart system that developed self-consciousness and wanted to break free?

Was it a mad scientist's creation to destroy the world?

In the end, all these theories were debunked as more and more evidence and facts kept surfacing.

He had only been on the wasteland for three months, plus another three months inside for God of the Ocean's group ruins, which added up to half a year at most.

The overall duration was too short. Amidst the constant rush for survival, Su Mo had not had any time to think or verify these theories.

It was only when Jiang Chu communicated with the talisman just now that something came to mind.

Origin, Lost in the Mist of History