DLC · requires the base game: Mysterium: A Psychic Clue Game
Mysterium - Hidden Signs
Twin Sails Interactive
Strategy
Steam key: you activate it in your Steam account. How to activate it
Price comparison
1 offer
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Mysterium - Hidden Signs: price summary
Right now the best price for Mysterium - Hidden Signs is $0.89, on Steam. That is 55% off its usual $1.99. We haven't found it in any key store, so for now it is only sold on Steam. Since July 2026, its lowest price on Steam in Europe was €0.89 (October 1, 2026). Steam has discounted it 3 times in that time.
- Developer
- Twin Sails Interactive
- Type
- DLC / add-on
Price history
Steam prices in Europe, in euros: the history is recorded on Steam Spain.
Screenshots
About Mysterium - Hidden Signs
This expansion includes: - 6 suspects, - 6 locations, - 6 objects, - 42 new vision cards.
