In 2025, human civilization reached its peak, but it also faced unprecedented challenges - the global temperature plummeted, species decreased rapidly, and humans had to build underground towns and live underground. However, this apparent tranquility did not last long, and a new crisis emerged again. At this time, the base that humans relied on for survival and even believed in gods was malfunctioning and could not provide any help. The total number of humans dropped sharply, and the situation was once again out of control. No one knew what would be waiting for them in the next second.
This is the end of the world.
Purpose: Survival