The cult leader in a cracked goat skull mask points a ritual dagger at you, red candles and hooded members behind him.

The Sinister Project, a real-life murder mystery game

they wrote your name in blood.

A personalized murder mystery game: a satanic cult chooses you, writes to your real phone, and you investigate it for about 4 weeks.

Start my investigation now $59 one-time · Instant access · No subscription

The case

They could have picked anyone. They picked you.

★★★★★★★★★★ 108 player reviews
The Sinister Project poster: a hooded cultist wearing a horned ram skull mask in a gothic church, in red smoke.

A satanic cult has chosen you. A stranger begs for your help, and they already know your name.

Answer the messages. Pick up the calls. Search the websites made for your case. Every puzzle, every picture and every message in this case is made for you.

What it takes to stop them

$59 one-time · lifetime access, no subscription
or pay instantly

Delivered in secondsYour access code lands in your inbox right after payment.

  1. Buy it like any other copyYour game code arrives by email right after payment. Nothing to decide now.
  2. Use the gift optionIt is in that email. Add their name and email, plus their address for the photos of their street.
  3. The cult reaches them firstAn ultra-real first message with photos of their own street. Then the reveal email brings their code. You choose the day.
  4. Rather hand it over?Print the gift certificate instead. Buying more than one? Each copy comes in its own email, with its own gift option.
  • 4+ weeksAt your own pace
  • 100% personalizedWritten for you, start to finish
  • Real physical mailDelivered to your door
  • Texts and callsWebsites and documents too
  • Characters talk backIn real time. They remember your words.
  • Several endingsYour choices decide

What happens to you

They watch you. You investigate them.

Part crime series, part escape game, part board game: a personalized investigation that plays out in your real life. For about 4 weeks, you investigate the cult that chose you, through real messages, phone calls, websites and a letter in your mailbox. At your own pace. Pause anytime.

  • 100% personalized
  • Puzzles made for you
  • In your real life
  • Calls
  • Texts
  • Emails
  • Websites made for the game
  • Real mail
In their hallway at night, a man kneels and reads a creepy letter that came through the mail slot, small bones on the doormat, goat-masked figures behind the frosted glass of the door

Look outside. A stranger just wrote to you.

100% personalized

A short private questionnaire, then you pick the day it starts. Every call, photo and puzzle is built from your answers: your town, your words, your life. Nobody else gets your case. You choose what you share, and your answers stay confidential.

Real calls

Your real phone rings. A voice says your first name. The characters question you and react to every answer.

A couple investigates at their kitchen table, a church website on the laptop, while red candles burn on their windowsill and goat-masked cult members stand outside

Follow the trail. It leads to them.

Real texts

Text the characters. They answer in seconds, to your exact words, and they remember them. One night, you sneak into their secret meeting. Live.

Puzzles made for you

Websites built for your case, a video channel, their symbols, codes to crack. A detective emails you hints, so you never stay stuck.

Seen from behind, a couple stands before an abandoned church whose stained glass glows blood red, masked cult members watching from inside

You’re next. Find them before they find you.

A life to save

They chose others before you. Follow their trail, find where someone is held and beat them before it’s too late.

Real mail

A real letter on real paper, addressed to you, with clues to find. Mailed to US addresses.

Start my investigation now $59 one-time · Instant access · No subscription

Your pace. Your day. Pause anytime.

About 4 weeks, at your own pace. You choose the day it starts, and you can pause for a week whenever you need to. The case waits for you.

Want it faster? Most waits between steps can be skipped with one tap, up to five times a week. Play it alone or with someone next to you. Hints are built in, from a small nudge to the full answer.

How it works

Four steps. Then they write.

  1. Right after payment

    Get your code

    Your game code arrives by email right after payment.

  2. Before it starts

    Answer in private

    A short questionnaire builds the case around your life. You choose what you share.

  3. Your call

    Pick your day

    Start right away or later. The case waits for the date you choose.

  4. About 4 weeks

    They make contact

    From there it reaches you: messages, calls, websites, one letter.

Player reviews

What players say about The Sinister Project

4.8
★★★★★
108 reviewsVerified reviews
Before you enter

Good to know

The game
What is The Sinister Project?

A real-life murder mystery game. A satanic cult has chosen you, and for about 4 weeks the case plays out in your own life: messages, phone calls, emails, videos and websites that exist for your case, and a real letter in your mailbox.

How is it different from a mystery box or an escape room?

There is no box to open and no room to book. Your case is built from your own answers and reaches you on your phone, in your inbox, on your computer and, in the United States, in your mailbox.

How long does it take?

About 4 weeks, at your own pace. You choose the day it starts, and the story waits for you at every step.

How hard is it?

Medium. Hints are built in, from a small nudge to the full answer, so you never stay stuck for long.

Is it scary?

Intense, not gory. It is a psychological thriller you are inside of: tension, pressure, a few real chills, never trauma. It is fiction. It stays on your phone, on your screen and in your mailbox, and nobody ever comes to your home.

Can I play with someone?

Yes. One game code is one investigation: play it alone or gather people around the same screen.

Who makes The Sinister Project?

Murder Experience, the makers of Watcher Killer. The Sinister Project is our first case.

Do I need to have played Watcher Killer?

No. They are two separate cases in two separate worlds. Start with either one.

Made for you & privacy
Is it really personalized?

Yes. A short private questionnaire feeds the story engine before the case starts. Every clue, every contact and every message is then built around you: nothing you receive is generic.

What do I need to play?

A smartphone with WhatsApp and Telegram, both free, and an email address.

Do you really mail me a letter?

Yes. A real letter lands in your mailbox during the investigation, anywhere in the United States. Outside the United States, your case runs without the physical mail.

Is my personal information safe?

Your questionnaire is confidential, and you choose what you share. Your answers are only used by our story engine to build your case, and we never sell them.

Safety
Is a cult really after me?

No. It is fiction. Nobody is really watching you and nobody ever comes to your home. Messages and calls only reach the number you give when you sign up.

Is there an age limit?

Yes. The Sinister Project is for players aged 18 and over. It is horror fiction about a cult, disappearances and simulated violence.

Buying & gifting
Is it a one-time payment?

Yes, $59 once. Lifetime access, no subscription and no hidden fees.

When do I get access?

Right away. Your game code arrives by email right after payment.

Can I buy both games at once?

Yes. Add both to your cart: you receive one game code per investigation.

Can I give it as a gift?

Yes, for free. After checkout, use the gift option in your code email: a printable certificate with their name and their code, or let the cult reach them first with an ultra-real message and photos of their own street, then the reveal with their code. They answer their own questionnaire, so the case is built around them.

The agents

Join the other agents

Now it's your turn. Turn the sound on to hear them.

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He chose you. Nobody knows why.

A killer who signs his crimes with puzzles, and who already knows your name. For 4 weeks or more, the case moves into your real life: texts, calls, emails, websites made for you, and a real letter in your mailbox.

  • Thriller
  • Serial killer
  • Advanced
  • 4+ weeks
Secure paymentEncrypted checkout by Stripe
Instant accessYour game code arrives right after payment
Play at your own pacePause anytime, your case waits for you