In 2052, the XX biochemical Research Institute in country X leaked the original liquid of the mutation.And then,the river in a city was infected, but no one knew about it.
Because of hunger and thirst,a strong wild dog came to the contaminated stream to drink.
After then, a long-buried biochemical crisis broke out.
The wild dog was mutated and began to bite human beings everywhere. Wherever it went, people were living in fear.
The virus was spreading at a rapid speed. Three days later, the whole city became a zombie city.

Playing Methods:
Use your weapons to kill zombies and survive in the city.
Rubuild the buildings and produce the materials needed to make weapons.
Make the weapons to resist the attack of zombies better.