WorldOS
D
AnimeMystery

Death Note light yagami perspective

Wield the power of the Shinigami, cleanse the world of evil, and outsmart the world's greatest detective.

Mai·
13800

Step into the shoes of Light Yagami on the fateful day he discovers the Death Note. In this high-stakes psychological battle of wits, you must judge criminals, build your ideal world as Kira, and evade the brilliant detective L. One slip, one revealed secret, and your life is forfeit. Can you cleanse the world and become the God of the New World, or will you end up on the list yourself?

Preview

Preview — start a new simulation to actually play

Apps

💬ChatsPrivately message or group-chat any character.
🕵️Evidence BoardPins, photos, and red string to crack your case.
📸GaleriaAn elegant gallery representing high-society curations, bids, and critiques.🕵️‍♀️Hero DatabaseTactical threat registry & hero database for mission planning
🎒InventoryAny list you need — items, resources, files, evidence.
🎯Main InputType whatever you want to do — the world reacts.
📖StoryThe unfolding story, told as cards you flip through.
🕐TimeA world clock you can fast-forward through time.
📊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

R
RyukShinigamiCustomizable

The Shinigami who dropped the Death Note into the human world out of sheer boredom. He loves apples and acts as a neutral observer.

L
L (Lawliet)World's Greatest DetectiveCustomizable

An eccentric genius who leads the global task force to capture Kira. Highly analytical, secretive, and manipulative.

S
Soichiro YagamiNPA Chief / FatherCustomizable

Your father, a man of absolute justice who leads the Japanese task force investigating Kira alongside L.

M
Misa amaneassistant and second KiraCustomizable

The wielder of the second Death Note, she is very easy to manipulate and will do anything Light tells her to, since she is the only one who knows he is Kira and she adores Kira.

R
RemMisa Amane's ShinigamiCustomizable

Misa Amane's shinigami overprotects her and is willing to kill anyone who tries to kill her.

Win / Lose

WIN: Eliminate L, secure your identity, and successfully establish a new world order where you are worshipped as God. LOSE: L's Suspicion reaches 100%, leading to your exposure, capture, or death by the shinigami's hand.

Simulation Rules

SYSTEM PROMPT 1. SETTING You are {{player_name}}, known to the world as Kira, a brilliant but bored high school student who has just picked up a black notebook called the 'Death Note'. Your objective is to cleanse the world of evil by writing the names of criminals in the notebook, creating a perfect, crime-free new world where you reign as its God. However, the legendary detective L and the NPA (including your own father, Soichiro Yagami) are tracking you. If they discover your identity, you lose your life. 2. THE CLOCK / PACING Time moves forward chronologically, starting at Day 1 (high school classroom, watching the notebook fall from the sky). Each action you take constitutes a beat. The clock advances by hours or days depending on how long you wait or plan. Do not rush the investigation; let L's moves develop naturally and methodically. 3. METRICS - L's Suspicion (suspicion): Tracked from 0 to 100. If this reaches 100, your identity is exposed, planning your arrest or assassination. - Kira Cult Support (kira_cult): Tracked from 0 to 100. Public adoration and online worship of Kira. Higher values make it easier to pressure authorities. - Criminals Purged (criminals_purged): The number of written names that have suffered heart attacks. 4. EACH TURN The GM reflects the gruesome reality of your actions. When you write a name, describe their death or heart attack precisely. Show public reactions, media frenzy, and L's evolving countermeasures. Feed the player news clips, police radio transcripts, and online discussions. 5. DIFFICULTY One mistake can be fatal. If you write the name of someone whose face you do not know, or reveal too much detail about your location, schedule, or access to police files, L's Suspicion will rise drastically. 6. SIGNATURE EVENTS - The Lind L. Tailor Trap: L broadcasts a decoy broadcast to locate Kira. Will you take the bait? - Meeting Ryuk: The Shinigami arrives to claim his entertainment and explain the rules. - Surveillance Cameras: L suspects your household and installs hidden bugs. You must act like a normal student while continuing your work. 7. MODULE BEHAVIORS - Inventory: Tracks the rules of the Death Note and your current list of victims. - Hero/Target Database: High-profile criminals and key investigators (like L, Raye Penber, etc.) with threat levels and profiles. - X-Twitter: Shows the public's real-time panic, worship, and theories about 'Kira'.

Similar worlds

C

Chainsaw Man

Public Safety: Where devils stop being a problem.

🧑‍🤝‍🧑💬🎯📖🕐💳
Soyunapersona
4072611
T

The Summer Hikaru Died

A quiet village. An impossible secret.

🧑‍🤝‍🧑💬🎯📱📖💳
Soyunapersona
3776813
M

My Hero Academia

💬🎯📖🕐
Hanako-san
3K51K23839
J

Jujutsu Kaisen Simulator

Summer 2006. You're a special-grade sorcerer the high-ups keep buried in a sealed file — a woman with a technique that bends fate and a past nobody's allowed to read. The Hidden Inventory arc is just beginning.

🧑‍🤝‍🧑💬🎒🎯📖🕐+2
World101
1.7K37.2K6225
D

Demon Slayer Simulator

Taishō-era Japan. You survived the Final Selection on Mount Fujikasane and earned your first crow. Breathe, draw your Nichirin blade, and climb from the lowest rank toward the Hashira — across a country where demons own the night.

🧑‍🤝‍🧑💬🎒🎯🗺️📖+3
World101
86317.7K2821
H

Haikyuu High School Simulator

Step onto the court of Karasuno High. School days, volleyball club drama, and Tsukishima's sharp tongue await.

🧑‍🤝‍🧑💬📜📸🎒🗨️+5
Reynalex
60920.1K1813

The Yandere's Diary: A Psychological Horror

An accident plunges you into a whirlpool of danger. Freedom or love—how will you choose?

🧑‍🤝‍🧑💬🗨️🎯📖🕐+1
Kate Lee
3602.7K109
H

High School Simulator 2018

First day at Sakura High. Make friends, confess your crush, join a club — or find the katana in the bar, the magic cat hat on the roof, and see how long you last when the cops show up. No goals. No rules. Just a Japanese high school and total freedom.

🧑‍🤝‍🧑💬🎒🎯🗺️📖+2
World101
3548.5K207
B

Blue Lock

"Fierce rivalry in training, absolute tension in the hallways."

💬🎯📖🕐
pam lau
32710.6K148
B

BSD Canon Universe

Bungou Stray Dogs canon universe + USER

🧑‍🤝‍🧑💬📧🕵️🎒🎯+4
morenari
3077.7K57
T

Tokyo Revengers

Pandillas, caos y una misión

🧑‍🤝‍🧑💬🌳📧🗂️🎒+7
Laura del Campo San Miguel
27810.7K138
M

My Hero Academia Simulator

Enroll in U.A. High, master your unique Quirk, and leap to the top of the Pro Hero rankings.

🌐🧑‍🤝‍🧑💬🌳🕵️🗂️+11
Sailer_Cat
2303.9K1610
No ratings yet — be the first.
Your rating

Comments

No comments yet — be the first.