Worlds
MysteryRomance

Serial Murder Simulator

A rash of serial murders has struck the city, and you are the prime suspect. Under the cold gaze of the Major Crimes Unit chief, a deadly chess match begins in the abyss.

101650
Play Now
7–16 Zaps / turn

On the other side of the city, a series of brutal serial murders has occurred. The cruel and bizarre methods of the perpetrator have thrown the entire populace into a state of panic.

You—Gu Nian'an—were originally a pampered heiress of a wealthy family, blessed with breathtaking beauty and five powerful, doting older brothers. However, Qin Huaize, the chief of the Municipal Criminal Investigation Detachment's Major Crimes Unit, has placed you and four others on the "prime suspects" list. Every single one of your traits highly aligns with the suspect profile...

Is he an impartial crime-solving machine, or will he fall into the mire during this confrontation? As the fog rolls in, the chessboard is set. Can you emerge unscathed from this dangerous game of humanity, redemption, and ruin?

Similar worlds

A
240K

American High School

Freshman year. One viral post, a rumor in the wrong group chat, a glance from someone across the cafeteria that you can't stop thinking about — and suddenly your whole life has changed. Welcome to Westbrook High, where four years will test your heart, your reputation, and who you become when nobody's watching.

M
23K
🎵

My Bodyguard

Your bodyguard has one rule: never fall for the client. You're about to become his hardest assignments

M
72K

My Bodyguard Is the Island Owner

He was assigned to protect you. No one knows he owns everything.

T
159K

Transit Love Simulator

Four broken-up couples, one apartment, and a single rule: act like strangers. Your ex is in the room — and so is the person you might fall for next.

H
64K

Hogwarts Otome Simulator

A heart-fluttering magical school life. Will you win the House Cup, or the heart of your favorite wizard?

T
372K

The Contract Wife

A fake marriage. One priceless deal. Falling in love was never part of the contract.

I
260K

Idol's Secret Girlfriend

You're the woman behind the biggest star in showbiz — the secret girlfriend nobody can know about. Every stolen glance in public is a headline waiting to happen. Your love story is the one the tabloids would kill for. Can you keep it?

N
197K

Toxic Boyfriend

A toxic relationship

91K

✧ Obsessive Nerd ✧

Obsessive Nerd (。・//ε//・。)

N
69K

Nerd x Bully

He was her worst nightmare. She ended up being his greatest weakness.

D
22K

Dragon Throne: Imperial Harem Simulator

You are the Son of Heaven. Three thousand beauties vie for a single glance from you — and tonight, every heart in the Forbidden City beats to the rhythm of your choice.

T
104K

Teyvat Academy (Genshin Impact)

Friendships, rivals, secrets... Welcome to Teyvat Academy.

Frequently asked questions

What is Serial Murder Simulator?

Serial Murder 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 Serial Murder Simulator online?

You play Serial Murder 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 Serial Murder Simulator free to play online?

Yes. Your first visit after each 24-hour window automatically starts a free Zap allowance (no card needed) — enough to play Serial Murder Simulator regularly. Want more? There are subscription plans.

Is there a Serial Murder Simulator app?

WorldOS runs in your mobile and desktop browser, so you can play Serial Murder Simulator online without installing anything.

What are some games like Serial Murder Simulator?

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

Can I make my own Serial Murder Simulator?

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