WorldOS
A
MysterySurvivalHorror

Zombie Apocalypse

A Zombie Apocalypse?! Survive as long as you can.

R
Ryu Lion2 followers · 5 worlds
4590
Start Simulation
Civilization 1: 13 Zaps / turn Civilization 1 Small: 5 Zaps / turn

If you were a Gacha kid who loved stories like "Zombie Song" or a fan of zombie tales in general, you will love this story.

It all started as a flu. In a week, hospitals collapsed. In two, the military abandoned the cities. In three, there was no one left alive to bury the dead.

Now, it is Day 11 of the Apocalypse. The power flickers for hours. The water runs murky. And in the streets, you only hear shuffling footsteps and pounding on doors.

It is called Necrosis. It takes 24 hours to die; it takes 2 minutes to rise. Those who were once your family, your neighbors, your classmates—now they walk, searching for noise, heat, and blood.

Supermarkets are looted. Large groups control the areas with food and water, but they charge a toll. Loners don't last long. Every day there are fewer safe places and more types of infected. They are no longer just slow; some run. Others have heightened hearing.

You have three days of food, little water, and a decision to make: stay where you are and wait to starve, or head out to find supplies, knowing that every door you open could be your last.

The world hasn't stopped. Other people are still surviving, fighting, betraying, and saving. And they will remember you for everything you do starting today.

The question is no longer if you will survive. The question is what you will become in order to do so.

Your goal is to investigate how the virus began and to find the cure.

Will you succeed, or die trying?

Preview

Preview — start a new simulation to actually play

Apps

Characters

M
Mikoto

Mikoto - 18 years old. Former kendo team captain. Personality: Serious, direct, and very responsible. She struggles to show her feelings. She steps to the front in danger and hates being seen as weak. She blames herself if things go wrong. How she helps: Best at melee combat. She defends and covers others. Organized: manages guards and tasks. Vulnerabilities: Doesn't ask for help. Sleep-deprived and irritable. Becomes blocked if she loses her weapon.

H
Haruna

Haruna - 17 years old. Former singer. Personality: Warm, empathetic, and expressive. Tries to keep up group morale despite her own fear. Attentive to others. How she helps: Basic first aid, cooking with rations, calming people in crisis. Exceptional hearing. Vulnerabilities: Cannot fight. Paralyzed by blood or death. Reliant on others; panics when alone. Gets exhausted if she doesn't eat.

T
Takumi

Takumi - 16 years old - Past: Member of the mechanics club. Used to spend his time fixing bicycles and old engines. Personality: Very active, optimistic, and talkative. Always tries to see the bright side, even in grim situations. He is loyal and the first to jump in to help. Contributes to the team by: Improvising barricades, making repairs, and moving quickly. Excellent at creating distractions and exploring high or narrow spaces. Vulnerabilities: Acts without thinking. He gets into trouble due to his impulsiveness. Prone to bouts of guilt if something goes wrong because of him. Cannot stand being trapped in small, enclosed spaces.

R
Ren

Ren - 19 years old - Past: Programmer and competitive gamer. Spent his days with headphones and a notebook. Personality: Quiet, analytical, and very cold in his speech. Always thinks three steps ahead. Does not show emotion, but cares in his own way. He is the strategist. Contributes to the team by: Understanding radios, maps, generators, and systems. He can plan safe routes and use ranged weapons like slingshots. He is the most logical person when everyone else is panicking. Vulnerabilities: Physically weak. Cannot defend himself if caught. Struggles to handle pressure in the moment. He is a Type 1 diabetic and needs medication.

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Frequently asked questions

What is Zombie Apocalypse?

Zombie Apocalypse 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 Zombie Apocalypse online?

You play Zombie Apocalypse 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 Zombie Apocalypse free to play online?

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

Is there a Zombie Apocalypse app?

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

What are some games like Zombie Apocalypse?

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

Can I make my own Zombie Apocalypse?

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