On January 1, 2022, doomsday came to the earth, and the whole world would be exterminated.
Jack was accidentally reborn three months ago.
Knowing that the end of the world was coming, he immediately began to build a refuge.
He also activated the Doomsday Survival System, which could help him constantly upgrade his refuge.
The bulky iron door had been upgraded to a titanium alloy fire-resistant insulated door!
The brick concrete walls had been upgraded to special space metal walls!
The power system, pipeline system, material storage system, and active defense system had all been upgraded.
Jack's refuge was as complete and elaborate as a space station!
When the other survivors were still struggling to survive in the ruins of the apocalypse, they suddenly saw a huge refuge.

When Doomsday Comes, I Can Upgrade My Refuge Infinitely

"Congratulations to master for completing a temporary world event. Now settling the reward."


"Master got a total of 100,000 survival points in this event!"


Jack couldn't remember how many points he had.


Anyway, he didn't need to think about the points for the time being.


Now Jack had a lot of points, which were very difficult for him to use up.


"System, I want to increase the area of the refuge by 10,000 square meters and the height by 100 meters."


"Report. Now the refuge expansion needs to pay 40,000 survival points. Do you accept it?"


After Jack gave the order, the refuges turned upside down.


The new area expanded at a visible rate.


Two minutes later, the refuge looked completely changed.


Now the total area of the refuge was 13,600 square meters, which was as large as the area of a community.


The sixth and the seventh floors were added.


With the expansion of the land, the refuge materials on the surface also expanded.


Chapter 55 Refuge Itself Was a Fortune