In a large-scale biochemical experiment, poisonous gas accidentally leaked, and the global climate was seriously polluted.
Most people became infected and turned into zombies, only a few survived.
At present, it is not possible to develop an antidote.
In order to protect the few surviving people, some warriors can only continue to kill zombies.
We call these warriors apocalyptic heroes.
Help the warriors buy upgraded weapons and sophisticated mounts, and use powerful skills and props to fight the enemy.