A sudden global cooling has torn apart the last traces of human civilization.
The temperature plummeted to minus 100 degrees Celsius, rivers froze, the ground froze into solid ice, and the once prosperous cities were buried under thick ice and snow.
Power is paralyzed, transportation is cut off, food is completely depleted, and the severe cold is the cruelest butcher's knife hanging over everyone's head.
In the frozen world, there is not only the biting cold, but also creatures that mutate in the extreme cold. The remaining humans huddle in shelters and dilapidated buildings.
Resources are plundered, human nature struggles, and survival becomes the only luxurious wish.
Under the eternal night of winter, human beings must either huddle together to keep warm, or turn into a cold frozen corpse on the ice sheet, or...
Intention: the end of the world