Mysterium (Board Game)

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(9 user ratings)
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In the 1920s, Mr. MacDowell, a gifted astrologist, immediately detected a supernatural being upon entering his new house in Scotland. He gathered eminent mediums of his time for an extraordinary séance, and they have seven hours to contact the ghost and investigate any clues that it can provide to unlock an old mystery.

Unable to talk, the amnesic ghost communicates with the mediums through visions, which are represented in the game by illustrated cards. The mediums must decipher the images to help the ghost remember how he was murdered: Who did the crime? Where did it take place? Which weapon caused the death? The more the mediums cooperate and guess well, the easier it is to catch the right culprit.

In Mysterium, a reworking of the game system present in Tajemnicze Domostwo, one player takes the role of ghost while everyone else represents a medium. To solve the crime, the ghost must first recall (with the aid of the mediums) all of the suspects present on the night of the murder. A number of suspect, location and murder weapon cards are placed on the table, and the ghost randomly assigns one of each of these in secret to a medium.

Each hour (i.e., game turn), the ghost hands one or more vision cards face up to each medium, refilling their hand to seven each time they share vision cards. These vision cards present dreamlike images to the mediums, with each medium first needing to deduce which suspect corresponds to the vision cards received. Once the ghost has handed cards to the final medium, they start a two-minute sandtimer. Once a medium has placed their token on a suspect, they may also place clairvoyancy tokens on the guesses made by other mediums to show whether they agree or disagree with those guesses.

After time runs out, the ghost reveals to each medium whether the guesses were correct or not. Mediums who guessed correctly move on to guess the location of the crime (and then the murder weapon), while those who didn't keep their vision cards and receive new ones next hour corresponding to the same suspect. Once a medium has correctly guessed the suspect, location and weapon, they move their token to the epilogue board and receive one clairvoyancy point for each hour remaining on the clock. They can still use their remaining clairvoyancy tokens to score additional points.

If one or more mediums fail to identify their proper suspect, location and weapon before the end of the seventh hour, then the ghost has failed and dissipates, leaving the mystery unsolved. If, however, they have all succeeded, then the ghost has recovered enough of its memory to identify the culprit.

Mediums then group their suspect, location and weapon cards on the table and place a number by each group. The ghost then selects one group, places the matching culprit number face down on the epilogue board, picks three vision cards — one for the suspect, one for the location, and one for the weapon — then shuffles these cards. Players who have achieved few clairvoyancy points flip over one vision card at random, then secretly vote on which suspect they think is guilty; players with more points then flip over a second vision card and vote; then those with the most points see the final card and vote.

If a majority of the mediums have identified the proper suspect, with ties being broken by the vote of the most clairvoyant medium, then the killer has been identified and the ghost can now rest peacefully. If not, well, perhaps you can try again...

Product Details

Boards & Dice
1 Jan 2016
Game Mechanic
Year Published
# of Players
2 - 7
User Suggested # of Players
Best with 5 - 6 players, Recommended with 3 - 7 players
Suggested Ages
10 and up
Playing Time
42 minutes
Game Designer
  • Oleksandr Nevskiy
  • Oleg Sidorenko
Game Artist
  • Igor Burlakov
  • Xavier Collette
User Suggested Ages
Language Dependence
No necessary in-game text
  • 2015 Golden Geek Best Board Game Artwork/Presentation Nominee
  • 2015 Golden Geek Best Board Game Artwork/Presentation Winner
  • 2015 Golden Geek Best Family Board Game Nominee
  • 2015 Golden Geek Best Innovative Board Game Nominee
  • 2015 Golden Geek Best Party Board Game Nominee
  • 2015 Golden Geek Best Thematic Board Game Nominee
Expansion Sets
  • Mysterium: Hidden Signs
  • Mysterium: Promo Cards
  • Mysterium: The Meeple
  • Tajemnicze Domostwo: Motive cards
  • Містеріум Expansion
Supply Source
South Africa

Customer Reviews

Lots of fun and Replaybility. Long Setup.

Reviewed by on (Verified Buyer)

Lots of fun to play, rules are a little confusing to understand at first, but once you know them its easy to play.

Very fun to play as you will generally never have the same outcome or easy to guess clues.

Quirky Cooperative Cluedo

Reviewed by on (Verified Buyer)

This game needs a minimum of 4 players to maximize entertainment. It's a great concept and really fun especially to fans that enjoy the Cluedo gameplay. Visuals are beautiful!

Cluedo meets Dixit

Reviewed by on

Mysterium is a beautifully illustrated game that bolsters your creative thinking and emphatic connection to fellow players. Although it's detective/deduction dynamic is similar to Cluedo, this game is fully co-operative. Trying to think your way into other players' minds in order to win the game together makes this a truly fun "who done it" game.