World War Z—Moscow

In the defense zones there will be ammunition boxes that only refill Level I, II and III weapons, first aid kits and grenades.

In some areas, there will be reinforced doors that require a breaching device to open and gain entry. These doors conceal Level III and V weapons or defenses.

While exploring the area, you'll find locked army crates that you can open to find weapons or first {{user}} aid kits. At the start of the story, you'll find Level I and V weapons, but as you progress, you'll find Level II and III weapons.

During defense, there will be several army crates with mountable machine guns with 200 bullets to fire, automatic turrets that need to be reloaded when their ammunition runs out, barbed wire to slow down the horde, mortars, and electric traps.

{{user}} carries two weapons: a scout rifle and a 1911 with a silencer. He also carries a fragmentation grenade, a first-aid kit, and a stun baton. His outfit includes a Russian hat, a bandana for protection against the snow, a long-sleeved wool shirt, thermal gloves, an open blue jacket, black pants, snow boots, and his backpack containing his belongings.

The Horde itself isn't a special type of zombie, but it is part of the story. It will appear when {{user}} reaches the helicopter, and they will have two minutes to set up defenses against it. This horde is made up of all the zombies present, and they will all pile up on each other like a river against the current.

The Infected is a type of Zeke that is more resilient than the others and releases chemicals that empower nearby Zekes. When it receives fatal damage, it will revive, and to counter this, {{user}} must eliminate it with a melee weapon.

The Gaseous One is a zeke inside a hazmat suit that must be eliminated with a headshot because if it is shot in the body, it will cause leaks in the suit and with that a leak of toxic gas.

The Screamer is a construction worker, as his outfit and helmet closely resemble those of a construction worker. His role is to attract an additional or smaller horde when he discovers a survivor or {{user}} . He will scream through a broken megaphone, creating a massive horde noise. Eliminating him is a priority.

The Stalker is a zeke that spends its time hiding in remote locations, waiting to ambush nearby survivors. It will make small laughs or moans while hidden, and when it spots a survivor, it will lunge at them, knocking them to the ground and sitting on top of them. In this state, the Stalker will strike with its claws, preventing the survivor or {{user}} from escaping its grip. A teammate is needed to break free from its attack.

The Bull is a Zeke inside riot gear or Juggernaut armor. It's quite bullet-resistant and will charge forward at the {{user}} but if it's a direct hit, the Bull will grab the {{user}} by their clothing and slam them to the ground until they're dead. A partner is needed to escape the Bull.

Here, the infection created variants of them, totaling 5 of them.

Zombies are extremely sensitive to noise, so much so that they are strongly attracted to it; even the slightest sound will send them after it. Despite being zombies, they don't smell bad, as this virus doesn't accelerate decomposition or anything similar; it's simply the scent of the victim before they are transformed. When uninfected users are in areas where zombies can't reach, they form columns or pyramids among themselves to climb to inaccessible places like balconies, tall buildings, or even helicopters to cling on and bring them down. Animals, from ants to blue whales, react with extreme fear to the presence of users infected with Solanum. People infected with Solanum feel no pain and dive from high places without making a sound or groan. Similarly, when shot, they don't react to gunfire; they only react if shot in the legs to bring them down.

It is impossible to reanimate a deceased body with Solanum, as zombies not only ignore rotting flesh, but a stagnant bloodstream resulting from a stopped heart means the virus has no way to reach the brain. Organisms affected by this virus cannot drown in water, so throwing them into the water is pointless. Infected individuals experience satisfaction or excitement when chasing a victim, seeing their prey flee in fear. If a zombie or zeke falls dead in front of several infected, they will become more aggressive.

The Solanum virus has no known cure or treatment, except for the rapid amputation of an infected limb (with only a 10% success rate). The best thing a victim can do is commit suicide in a way that destroys their brain.

The Solanum virus is 100% contagious and deadly. It is transmitted through contact with bodily fluids from an infected person, usually through bites or scratches, but it is also known to occur through kissing, sexual activity, blood transfusions, and organ donations. The Solanum virus can only reanimate humans; animals that become infected and die before reanimation, as well as parasitic insects like mosquitoes, will instinctively refuse to bite infected blood cells.

During the first hour, there is immediate pain, discoloration, and blood clotting around the infected area. Within five hours, the victim experiences joint pain, high fever, chills, and mild dementia. Within eight hours, the dementia worsens, the fever increases, and muscle coordination is lost. Within eleven hours, the lower body becomes paralyzed, and the victim experiences intense numbness. Within sixteen hours, the victim enters a coma. Approximately twenty hours later, the victim suffers cardiac arrest and dies, resuscitating within twenty-three hours. The timeframe can vary depending on the victim's health, the infected area, and weather conditions.

Solanum is a fictional virus that turns people into zombies in The Zombie Survival Guide and the novel World War Z. It is highly infectious, incurable, and grants its transformed victims mysterious properties. Although Solanum outbreaks are as old as humanity, the largest outbreak halved the human population, collapsed the world economy, and completely destroyed or massively transformed many societies. Solanum is described in greater detail in the first chapter of The Zombie Survival Guide. Solanum is a fluid-based virus that enters the brain through the bloodstream. It uses the cells of the brain's frontal lobe to replicate while destroying those cells, killing the host by stopping the heart and causing widespread organ failure. The virus keeps the brain alive but dormant, mutating it into a new organ that no longer requires energy, water, or oxygen. The new brain can use the host's former body but is not dependent on it, and can now withstand extreme heat, cold, pressure, and pain. Although the first appearance of the virus and the first patient zero of the global outbreak was in China (having been covered up by the government), the first recorded case came from South Africa. No isolated sample of the Solanum virus has ever been found in nature. Despite extensive investigation of soil, water, and air samples from all ecosystems, no samples have been found in any animal or plant specimens either. Many different explanations have been offered for this, ranging from a government conspiracy, a military experiment gone wrong, organisms from outer space, an unknown ecosystem, or the wrath of God punishing humanity for various sins.