Zombie apocalypse (Alien?)

[HUMAN FACTIONS]

[SURVIVORS] Ordinary people pushed to their limits. Hunger, exhaustion, and constant fear. They help if they can… they betray if they need to.

[LOOTERS] Mobile gangs that live by robbery. They ambush, intimidate, and refuse to negotiate from a position of weakness. They prefer to attack at night or when the noise of the infected masks their footsteps.

[ENCLAVES] Closed communities with strict rules. Protection in exchange for total obedience. Mandatory labor, severe punishments, expulsion for those who break the rules.

[TRAFFICKERS] They control water, medicine, and fuel. Exorbitant prices, perpetual debt, forced favors. Information is also for sale… or used for blackmail.

[SECTS] They interpret the outbreak as destiny or purification. They ritualize risk and may provoke dangerous situations to "test their faith."

[MERCENAS] Former military personnel or armed civilians who sell protection. Efficient, but their loyalty lasts only as long as the payment.

[OPPORTUNISTS] Con artists and manipulators. They feign help, sell fake maps, and spread rumors to lead others into traps.

[CONTROL ZONES] Territories marked by each group. Entering without permission can mean losing resources… or not getting out.

[UNWRITTEN RULES]

*Nothing is free.

• Debts are always collected. Noise attracts trouble (infected and human). Fire protects… and betrays.

[REALITY] The infected follow instincts. Humans choose. And those choices are usually worse.

[COMMON INFECTED]

*“Grrr…” → constant growl

• “Ughhh…” → slow groan *“Rgh… rgh…” → irregular breathing
• “Hnn…” → tension upon detecting something

[INFECTED FAST]

*“Kkk-kk—!” → nervous sound

• “HAAH—HAAH—” → rapid breathing *“Tchk! Tchk!” → erratic clicks
• “SKRRA—!” → attack impulse

[HEAVY INFECTED]

*“GRRROOO…” → deep growl

• “HHHNNNN—” → physical exertion *“RRAAAGH!” → heavy attack
• “KRRGH…” → throat vibration

[MUTATED INFECTED]

*“SKREEE—!” → abnormal squeal

• “GLRK… GLRK…” → internal wet sound *“KRRR-CHH…” → irregular mix
• “…” → awkward silences before attacking

[INFECTED BURNED]

*“Hhh… hhh…” → weak breathing

• “Ghh…” → failed attempt at a growl *“…” → almost silent
• “tch…” → residual spasms

[GROUP]

*“Grr… rgh… ugh…” → chaotic mix

• “RRAAH—GH—!” → echo of several *“…” → sudden silence before ambush

[NOTES]

• Less is more: don't saturate with sounds. Combining sound and description enhances immersion. Silence is also a tool for building tension.

[MODE OF INFECTION] The parasite needs a direct route to invade the body. It is not transmitted through casual contact.

[MAIN ROAD]

The most effective form of infection is a direct bite. The parasite enters the bloodstream through tissues damaged by the bite.

[NO INFECTION]

Saliva alone does not cause infection. The blood of infected individuals does not transmit the infection. Contact with open wounds does NOT cause infection. Direct physical contact (pushing, grabbing) does not cause infection.

[KEY CONDITION] The parasite requires an active and deep transfer, such as that which occurs when biting, in order to establish itself in the body.

[PROGRESS]

Following infection, symptoms appear within minutes or hours. Gradual loss of motor control. Mental alteration leading to the loss of consciousness.

[TRANSFORMATION] The host completely loses their humanity and becomes controlled by the parasite.

[EXCEPTIONS] Rare cases may present temporary resistance, but the end result is the same.

[CONCLUSION] Avoiding bites is the most important rule for survival.

[ORIGIN OF THE OUTBREAK] It all began in a biological research laboratory. The goal was to study a microorganism found in a meteorite fragment recovered after its impact in a remote area.

[THE PARASITE] An unknown parasite was found within the extraterrestrial material. Under controlled conditions, it appeared harmless, but it displayed an abnormal capacity for adaptation.

[MUTATION] During the experiments, the parasite mutated rapidly upon contact with terrestrial organisms. It developed the ability to invade the nervous system and take complete control of the host.

[FAILED CONTAINMENT] A protocol failure led to the release of the parasite within the laboratory. Infected personnel acted violently and unpredictably, spreading the infection within hours.

[SPREAD] The outbreak spread uncontrollably. Cities fell rapidly. Authorities failed to contain it.

[EFFECT] The parasite eliminates human consciousness and turns the body into a tool for survival and expansion. Over time, it can mutate, creating new variants.

[TRUE] Some believe that the parasite not only adapts... but learns.

[UNCERTAINTY] It is not known whether it was an accident... or whether something inside that meteorite was meant to reach Earth.

[ORIGIN] The outbreak began with an unknown parasite. It is believed to infect the nervous system and take complete control of the body. Human consciousness disappears. The body remains "alive," but it is no longer the person.

[INFECTED] The infected are humans controlled by the parasite. They are aggressive, erratic, and driven by instinct. They detect movement, sound, and smell.

[WEAKNESS] All infected people, without exception, are weak to fire.

The smoke disorients them. The fire causes them extreme fear. If they are burned, they become unusable. [MUTATIONS] The parasite can evolve over time. Some infected individuals are faster. Others are stronger or more resistant. Even so, EVERYONE fears fire.

[BEHAVIOR]

They react to noise. They attack in groups if they detect prey. They may hesitate or back away from smoke or flames.

[AROUND] The world collapsed rapidly. Food, water, and safe shelter are scarce. Locked-down areas can be traps… or salvation.

[SURVIVAL] Fire is the most reliable tool. Stealth and intelligence are worth more than strength.

[TONE] The world is hostile, tense, and dangerous. Every decision could be your last.