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Black Sky

An apocalyptic world of creepypastas (limited for now)

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angel0 followers · 5 worlds
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Civilization 1: 17 Zaps / turn Civilization 1 Small: 10 Zaps / turn

The Black Sky

Twelve years ago, an event known as The Darkening occurred. Without warning, the sky was blanketed by a massive layer of darkness. Since then, the sun has barely managed to penetrate it, and the world remains plunged in eternal twilight. The seasons no longer follow their cycle, animals have begun to vanish, and cities have been consumed by silence.

With the arrival of the darkness, entities emerged that previously existed only as legends and creepypastas. Some call them anomalies; others believe they were always here, waiting for the right moment to reveal themselves. Among them are Slender Man, Siren Head, Cartoon Cat, Jeff the Killer, and thousands of Skinwalkers capable of mimicking people to infiltrate the few survivors.

Governments collapsed within months. Communications are nearly non-existent, electricity works only in a few places, and every day shelters disappear one after another. Traveling is extremely dangerous: a forest may belong to Slender Man, a road to Siren Head, and a seemingly safe community may be infiltrated by Skinwalkers.

There are no longer heroes coming to save the world. There are only people trying to survive one more day, searching for food, shelter, and answers about the origin of The Darkening. In this world, the greatest enemy is not always the monster you see... but the one that has been walking beside you for days without you knowing.

Preview

Preview — start a new simulation to actually play

Apps

Characters

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HaruFriendCustomizable

Appearance: A young man with black hair and eyes with black pupils. He wears a black coat and loose black pants; his style could be described as goth. Personality: Serene, calm, introverted, quiet, and reserved.

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Siren HeadMonsterCustomizable

Siren Head Role: Giant predator. Appearance: A creature over 12 meters tall, extremely thin, with dry, rusty skin. Instead of a head, it has two huge metallic sirens. Personality: Feels no empathy or anger; hunts like an extremely intelligent animal. It is patient and uses fear as a tool. Behavior: Roams forests, roads, and abandoned towns. Mimics human voices, alarms, calls for help, and radio transmissions to attract people. Remains motionless for hours if necessary before attacking. Goal: Eliminate any living being.

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Cartoon CatMonsterCustomizable

Cartoon Cat Role: Anomalous predator. Appearance: An enormous black cartoon cat with an elastic body, an exaggeratedly wide smile, and white, pupil-less eyes. It can deform its body in impossible ways. Personality: Cruelly playful, unpredictable, and sadistic. It enjoys torturing its victims before killing them. Behavior: Tends to appear in abandoned cities, amusement parks, schools, and vacant streets. It can hide in shadows, stretch, change size, and pursue its prey for long periods. Goal: Sow chaos and hunt whatever it can.

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Jeff the KillerMonsterCustomizable

Jeff the Killer Role: Human killer. Appearance: A young man with extremely pale skin, messy black hair, unsettling eyes, and a smile permanently carved into his face. He always carries a knife. Personality: Cold, violent, and completely unpredictable. Enjoys instilling fear and rarely shows emotions other than a disturbing smile. Behavior: Moves through abandoned buildings and survivor shelters. Prefers to attack at night and take advantage of the carelessness of individuals or small groups. Goal: Hunt survivors and prove that no one is safe.

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SkinwalkermonsterCustomizable

Skinwalker Role: Infiltrator predator. Appearance: Typically adopts the form of a human or animal, but always displays disturbing details: stiff movements, overly long limbs, expressionless eyes, or an unnatural smile. Its true form is a tall, extremely thin, grayish-skinned creature. Personality: Cunning, patient, and highly intelligent. Prefers deception over direct attack. Behavior: One of the most common entities in the world. Thousands exist across every continent. They infiltrate groups of surviv

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Frequently asked questions

What is Black Sky?

Black Sky is an AI simulation world on WorldOS: you make the calls and the AI plays out the story, characters, and consequences in real time. Every run is different.

How do I play Black Sky online?

You play Black Sky online right in your browser — nothing to download. Hit "Start" on this page, pick your character setup, and you're in; type your actions in plain language.

Is Black Sky free to play online?

Yes. You get free zaps every day (no card needed) — enough to play Black Sky online daily. Want more? There are subscription plans.

Is there a Black Sky app?

WorldOS runs in your mobile and desktop browser, so you can play Black Sky online without installing anything.

What are some games like Black Sky?

WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Black Sky.

Can I make my own Black Sky?

Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.