Steam release scheduled · App 5451420

Murder Mystery Online

View on Steam ↗Updated Awaiting first sample
  • Multi-player
  • Co-op
  • Online Co-op
  • Adjustable Text Size
  • Custom Volume Controls
  • Stereo Sound
  • Family Sharing
Steam

Store data

Store status
Coming soon
Scheduled release
13 November 2026
Positive reviews
—
Total reviews
—
Release date
13 November 2026
Player tracking—Begins when the game launches
Release date13 November 2026Scheduled by Steam
Store statusComing soonSteam store listing
Steam rating—0 reviews
Steam metadata

Game information

Details supplied by the Steam store
App ID
5451420
App type
Game
Developer
Publisher
Supported systems
Windows
Genres
Adventure, Indie, Simulation, Strategy, Free To Play
Release date
13 November 2026
Last player update
Awaiting first sample
Steam store data

System requirements

Supplied by the developer on Steam

Windows

Minimum
Requirement
Requires a 64-bit processor and operating system
OS
Windows 10 (64-bit)
Processor
Intel Core i3-6100T or equivalent
Memory
8 GB RAM
Graphics
Intel HD Graphics 530 or equivalent (DirectX 11 / WebGL 2)
DirectX
Version 11
Network
Broadband Internet connection
Storage
2 GB available space
Additional Notes
Online multiplayer (5 players). A microphone is recommended for in-game voice chat. Integrated graphics run at automatically reduced quality.
Recommended
Requirement
Requires a 64-bit processor and operating system
OS
Windows 10 / 11 (64-bit)
Processor
Intel Core i5-8400 / AMD Ryzen 5 2600 or better
Memory
16 GB RAM
Graphics
NVIDIA GeForce GTX 1060 / AMD Radeon RX 580 or better
DirectX
Version 11
Network
Broadband Internet connection
Storage
2 GB available space
Additional Notes
A microphone is recommended for in-game voice chat.
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Player history

Concurrent players

This range will fill as SteamWatch collects more samples.

24-hour and 7-day views use hourly peaks from ten-minute samples. Longer views use retained daily peaks. Up to 24 recent event markers are shown per layer.

Twitch

Twitch stats

Awaiting the first Twitch sample.
Long-term history

Monthly players breakdown

Calculated from SteamWatch samples
Monthly data will appear after the first successful player sample.
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About this game

Description

Supplied by the Steam store

Murder Mystery Online is a first-person 3D online murder mystery for you and your friends. You all walk into the same crime scene, investigate it yourselves, and talk your way to the truth. Everyone takes a role. What really happened is waiting in the scene, and in what everyone says.

Walk it. Search it.

Explore a connected 3D scene in first person. Open drawers, chests and doors, sweep your flashlight into the corners, and examine anything suspicious. What you find goes into your own notebook. No one else can read it.

A photo is a clue

During investigation, raise your camera and shoot the scene. Film is limited. Each photo carries the clues that were actually in frame. Bring them to the board during the debate, and if someone posts a photo that implicates you, a rebuttal helper suggests how to answer.

Argue to win

After the investigation, each player takes a turn presenting. Pin photos and notes to the board, link them with arrows, and make your case. Voice chat is built in. During investigation you can only hear people who are close, so a private conversation in a corner is possible. Your voice is converted to your role's voice.

Name the culprit in the dark

When it is time to vote, every player enters a black space alone. The other suspects stand with their backs to you. Walk up behind one and accuse. Once everyone has voted, a narrator announces the result.

Rewatch it. Edit it like a variety show.

Every match is recorded automatically (kept for 30 days). Replay it from any player's point of view or a free camera. Press "Make it a variety show" and the game picks the best moments, adds captions and sound effects, and saves a video.

Start free. One player buys, everyone plays.

The base game is free. Anyone can open a room for the free case The Manor Across the River and the Mystery Lodge hangout right away. For paid episodes, only the player who creates the room needs to own it; every friend with the room code joins free.

Cases

FREE · The Manor Across the River | 5 players | 80 min | difficulty 2/5

A storm has taken the only bridge. In a remote manor across the river, the master celebrates his birthday. Just before dessert, he is found dead in his locked study.

EP.1 The All-Night Rite | 5 players | 120+ min | difficulty 3.5/5

"A chochiseong is a rite that runs all night. It begins when the sun goes down and ends only when the sun comes up. Until then, the house is locked from the inside."

On the night of the full moon, five people gather at a shrine halfway up the mountain. Less than an hour after sundown, the shaman is dead.

EP.2 Three Days | 5–6 players | 120+ min | difficulty 4/5

"A youth co-op with a dream: bring the countryside back to life."

On the night of December 19, the head of the youth co-op is found inside a built-in wardrobe, dead for three days. Yet across those same three days, every one of the other five had heard from them.

FREE · Mystery Lodge | 1–8 players | a hangout with no case

A snowbound log cabin with a crackling fire. Sit around with friends, talk, and learn the controls. You can go in alone.

New episodes are in development.

In-game language: Korean

Steam gallery

Screenshots

11 available
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