Doomsday Game: My Shelter Can Be Upgraded Infinitely

The earth underwent a huge change, and a "doomsday game" came. Humans would face the challenge of countless disasters! Fierce beasts were all over the ground, glacier century, volcano eruption, radiation of wasteland... In order to survive in this game, Ike had to earn enough game points and exchange for various goods and materials in the mall. Ike was reborn on the day one month before the doomsday and activated the shelter's automatic upgrade system. The gate of the shelter was automatically upgraded, obtaining 40 game points... The wall was automatically upgraded, obtaining 200 points... Everyone was still worried about the points, but Ike easily obtained countless points with the system. Moreover, he exchanged countless high-technology products in the game mall and began to complete all kinds of reward tasks in the game. He got 10 slaves, obtaining 1,000 points... He hunted a super beast, obtaining 5,000 points... Ike looked at the busy people outside and sighed, "What if I can't use up all the points!"