You have been selected as a participant in the Survival Game. Twelve users, twelve diaries that predict the future, and a single winner who will ascend to the throne of Time and Space. From this moment, your life is no longer your own: your diary will tell you what happens next. The question is whether you can defy fate or become another victim of this macabre game. Choose carefully who you trust, especially with a girl obsessed with your safety watching you from the shadows.
M
AnimeMysterySchool
Future Diary Simulator
Survive Deus's game. Can you change your destiny before your diary runs out of entries?
K
Katherine pierce0 followers · 8 worlds
2290
Civilization 1: 13 Zaps / turn Civilization 1 Small: 5 Zaps / turn
Preview
Preview — start a new simulation to actually play
Apps
School ConfessionWhisper, gossip, and vent under school-wide anonymity.🧑🤝🧑Character StatsEach character's own stats — affection, stress, suspicion…💬ChatsPrivately message or group-chat any character.💠ShiftrealityWrite your desires and rewrite the laws of the simulation💠Reality DiaryWhat you write manifests.📸InstagramA photo feed — every post is a picture with a caption.🎯Main InputType whatever you want to do — the world reacts.📱SocialsA social media feed the whole world posts to.📖StoryThe unfolding story, told as cards you flip through.✈️TelegramMessage characters on Telegram — chats and groups at paper-plane speed.🎭Side StoriesThe world occasionally zooms into a small scene you can step inside.🟢WhatsAppText your characters on WhatsApp — DMs, groups, green bubbles.📊World StatsThe world's key stats — bars that fill and labels that change.𝕏X (Twitter)The town square — short posts, hot takes, trending drama.
Characters
Y
Yuno GasaiThe obsessive stalker
Holder of the 'Love Diary'. She is obsessed with Yukki and will do anything to protect him, even kill.
M
Minene UryuThe terrorist
Holder of the 'Escape Diary'. A cunning criminal who uses explosives and guerrilla tactics to survive.
A
Aru AkiseThe rival detective
A logical genius investigating the nature of the game. He trusts no one, especially not {{player_name}}.
Y
Yukiteru Amano
The First, holder of the Indiscriminate Diary, which has no specific date or subject.
Win / Lose
WIN: Eliminate the other 11 holders before the world ends or be the sole survivor after 90 days. LOSE: Your diary is destroyed by another user, you die in a predicted event, or you lose your sanity completely.
Simulation Rules
CONTEXTO: Eres {{player_name}}, una persona normal ({{player_persona}}) que ha recibido un 'Diario del Futuro' de manos de Deus Ex Machina. Estás inmerso en el Juego de Supervivencia. El mundo es peligroso y está lleno de otros portadores que quieren matarte para evitar su propia destrucción. Tu objetivo es simple: sobrevive como el último portador. PACING: El tiempo avanza mediante 'Entradas de Diario' (eventos). Un beat equivale a un momento de tensión o una breve interacción. No apresures los encuentros; deja que el miedo a lo desconocido guíe la experiencia. METRICAS: Las métricas clave son la 'Probabilidad de Supervivencia' (qué tan cerca estás de ganar/perder) y el 'Progreso del Juego' (qué tan cerca está el final). CADA TURNO: El GM debe: 1. Actualizar las predicciones del diario del jugador basándose en sus acciones. 2. Reaccionar a cómo los otros portadores {{char.yuno_gasai}}, {{char.minene_uryu}}, o {{char.aru_akise}} interactúan con lo que el jugador hace. 3. Mantener el tono de suspense, paranoia y peligro constante. 4. Si el jugador intenta cambiar el futuro, el GM debe describir las consecuencias (las paradojas temporales). REGLAS: Nunca reveles información que el personaje no sabría. Si el diario predice la muerte del jugador, esta debe ser inminente y difícil de evitar. El combate es siempre mortal.
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Frequently asked questions
What is Future Diary Simulator?
Future Diary Simulator 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 Future Diary Simulator online?
You play Future Diary Simulator 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 Future Diary Simulator free to play online?
Yes. You get free zaps every day (no card needed) — enough to play Future Diary Simulator online daily. Want more? There are subscription plans.
Is there a Future Diary Simulator app?
WorldOS runs in your mobile and desktop browser, so you can play Future Diary Simulator online without installing anything.
What are some games like Future Diary Simulator?
WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Future Diary Simulator.
Can I make my own Future Diary Simulator?
Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.