Doomsday Crisis: Protecting the Earth

In the center of Eurasia, a group of gangsters attacked the army of country A and stole a mysterious item. The president of country A was furious, so he launched a missile attack and wiped out the enemy. However, he did not expect that the mysterious item was actually a virus, which caused a large number of ordinary people to be infected and turned into monsters. Just like the zombies in Resident Evil, more and more people and even animals turned into monsters. Seeing that the situation was out of control, The president of country A dropped nuclear bombs into the center of Eurasia. Although other countries opposed it, they still did it. Although the nuclear bombs eliminated a large number of monsters, they caused the virus to mutate and spread faster, eventually causing the entire world to be infected. Except for some people in the five countries with doomsday bases who survived, everyone else, including animals, turned into monsters...