English-language browser investigation

Your next night in
has a case to solve.

Investigate Hotel Vesper. Read witness statements, compare records and build your final accusation. Play solo or discuss the clues together around one screen.

Play the free 23:17 test Open the full case

Free mini mystery · English · No account required · Full case sold separately

Case001Hotel Vesper

Founding investigation / Case 001

Go beyond three clues. Open the whole investigation.

A text-rich mystery in English. Read 16 evidence files across four stages, compare witness accounts and explain what happened. No app, shipment or subscription. Solo or together around one screen; not synchronized online multiplayer.

  • 0116 evidence files across 4 investigation stages
  • 02Progress saved between sessions
  • 03Spoiler-safe hints and final reconstruction
Case 001US$14

The Guest Who Never Arrived

Purchase securely on Gumroad. Your receipt includes the access key that opens the investigation.

Buy Case 001 · US$14

Case 001: US$14. One-time purchase. Applicable taxes and currency conversion appear at checkout. Your Gumroad receipt includes your access key.

Or solve the free evidence test first
Incoming file / 001

The Guest Who Never Arrived

Every statement is true.
Except the one that matters.

At 11:17 p.m., a key registered to Room 317 opened a service door. The room had been vacant for nine years. Four witnesses agree on what happened next—which means one of them planned the agreement.

Play at your own pace1–4 investigatorsSpoiler-safe hints
Active investigation / release desk

The case archive

A living library of impossible crimes.

Each file is a complete digital investigation. New evidence, new locations, and a new deception - built for solo detectives or teams.

Final investigation
001

Hotel Vesper

The Guest Who Never Arrived

Four guests entered. Five silhouettes left. The fifth name in the booking system never checked in.

16 files · 4 stagesOne shared screenEnglish
Buy Case 001 · US$14

Case 001: US$14. One-time purchase. Applicable taxes and currency conversion appear at checkout. Your Gumroad receipt includes your access key.

Try the free evidence test
Available now
002

Nocturne Express

The Passenger in Seat Zero

At 23:14, a medical alert came from a seat that does not exist. Eleven minutes later, a sealed artifact was gone. The train never stopped.

4 acts1-4 playersEnglish
Buy Case 002 · US$14
Available now
003

Meridian Radio

The Voice on the Dead Frequency

At 00:17, a broadcaster dead for eighteen months answered a question asked live. Every suspect was visible when the voice spoke.

4 acts1-4 playersEnglish
Buy Case 003 · US$14

How the club works

Enter. Investigate. Accuse.

01

Open the file

Receive a self-contained case with statements, logs, images and records.

02

Follow the signal

Unlock evidence in acts, save your progress and request spoiler-safe hints.

03

Seal the accusation

Name the planner, explain the method and compare your reconstruction with the truth.

Free evidence testFile 23:17Sealed

Play detective · Free mini mystery

Can you catch
the witness’s lie?

Read three clues from Hotel Vesper. One witness describes something that could not have happened.

English · About 5 minutes · No signup or payment

Read the clues → choose the contradiction → reveal the answer.

A fictional mini mystery. Full cases are separate purchases.