A year ago, the world was torn in half by a sudden disaster. A terrifying creature called the "Moon Shadow Virus" swept across the world. It was invisible and could not only control the human brain, but also corrode all electronic equipment and intelligent systems, transforming humans and intelligent systems into ruthless killing machines. As long as they were attacked by people or mechanized equipment infected with the "Moon Shadow Virus", the people being attacked would also become ruthless killing machines. As a result, human society fell into unprecedented chaos and despair.
Purpose: Break through difficulties