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Mysterium: A Psychic Clue Game
Mysterium is a cooperative deduction game set in the 1920s in which a ghost guides a group of psychics to uncover a murderer, as well as the weapon and location of the murder, using only visual clues.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.
“I found Mysterium as I searchd for a famous classic crime solving table top-digitalized game, alternative to try. This game is REALLY challenging and I like that. What I don't like is that you can't select your psychic character in solo play! The developers need to correct that!…”
— a player, Steam review · 2 hrs played“Very fun! At first I was a very confused man making connections where there were none, then I was a ghost and have never been so frustrated and proud of my friends at the same time.”
— a player, Steam review · 9 hrs played“Loved this game and played it with friends constantly. Unfortunately, we haven't been able to play in months due to the server being shut down. As of my recent launch, May 3rd, 2026, you can no longer launch Blitz, Online, or Quick Match. The buttons straight up do nothing. It's…”
— a player, Steam review · 12 hrs playedPlayer activity
Monthly average concurrent players. Live count fetched 2026-07-24 00:23 UTC · history via SteamCharts.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-25. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
Scheduled Maintenance Operation on January Tuesday 9th 2018
Please, note that our engineering team will be performing a 2 hours maintenance operation on all our systems on January 9th starting at 4:00 am EST. Our online games will be affected. More information
Scheduled Maintenance Operation on January Tuesday 9th 2018
Please, note that our engineering team will be performing a 2 hours maintenance operation on all our systems on January 9th starting at 4:00 am EST. Our online games will be affected. More information
List of updates in version 2.3.5
- New expansion "Secrets & Lies" available: Discover 6 new suspects, 6 new locations and 6 new items. And for the first time, experience a brand new game mode, thanks to the 18 story cards which are a
List of updates in version 2.3.5
- New expansion "Secrets & Lies" available: Discover 6 new suspects, 6 new locations and 6 new items. And for the first time, experience a brand new game mode, thanks to the 18 story cards which are a
Updates in version 2.2.1
- In the lobby, it's now possible to switch freely between waiting screen and join screen without leaving the game. - Cards from all different promos and expansions can be enabled through Additional C
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-20.
| Genres | Strategy |
| Player tags | Strategy · Board Game · Tabletop · Multiplayer · Co-op · Mystery · Online Co-Op · Singleplayer (SteamSpy community voting) |
| Features | Single-player · Multi-player · PvP · Online PvP · Co-op · Online Co-op · Cross-Platform Multiplayer · In-App Purchases |
| Languages | English * , French, Italian, German, Spanish - Spain, Russian, Ukrainian * |
| Estimated owners | 100,000 – 200,000 (SteamSpy) |
| Official site | https://www.Twin-Sails.com |
Minimum system requirements (PC)
Minimum: OS *: Windows 7 32 bit Processor: 2 ghz processor single core Memory: 2 GB RAM Graphics: Intel HD Graphics 3000