Doomsday Hero is a shooting war game that mimics doomsday survival. Demonstrate your survival skills in Doomsday Hero's zombie-infested environment! Toxic gas was accidentally released during a large-scale biochemical experiment, drastically polluting the entire climate. Only a few people survived after being infected and transformed into zombies. It is currently unable to produce an antidote. Some warriors can only keep murdering zombies to protect the few survivors. You can construct the final defense base here to repel the invasion of wicked zombies. You can keep making science and technology better, building stronger defenses, and upgrading weapons to kill more zombies until we can save the city.