The earth suffered a terrorist attack from the "Black Wave" virus without warning. This virus spreads extremely fast and is highly contagious, paralyzing the world in a short time. Zombies are rampant in the city. They are slow-moving but extremely powerful. Those who are bitten will quickly be infected with the virus and become the same kind. Resources are extremely scarce, and survivors may fight for a mouthful of food or a bottle of water. Different survivor camps are struggling to survive in the ruins, and they are constantly in conflict with each other. Human civilization is in danger.
