
Region — Works worldwide — no region restriction.
Includes: Mysterium base game Mysterium - Hidden Signs Mysterium - Secrets and Lies The official adaptation of the famous board game Mysterium! 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. Choose your way to play: take on the role of the ghost who gives others clues, or as one of the psychics trying to decipher the abstract "Vision Cards"
Complete checkout — your code lands in your inbox in ~30 seconds, and is always available under Orders in your Gameplug account.
In the desktop client: top-left menu "Games" → "Activate a Product on Steam…" (or use the web link below).
Paste the key (format XXXXX-XXXXX-XXXXX) and accept the Steam Subscriber Agreement.
The game joins your library permanently — install it on any machine you sign in to.
Code not working? Contact support — confirmed-invalid codes are replaced or refunded.







