Which Expansion
Mysterium · Expansion

Mysterium: Hidden Signs

Worth it

Our take
BGG rates it 7.75 from 3,307 ratings (base game 7.19). BGG posters say it only adds variety, with no change in rules or difficulty, so it is safe to add from the first game. Secrets & Lies carries the same extra cards plus story cards.
What you need first
Just the base game
What it adds
8 new characters, 8 locations and 8 objects (16 cards of each type) and 42 more vision cards for the ghost, with no rules changes.
What it fixes
BGG forum posters say the base game's only weak point is limited card variety.

Compare it

Sources

Last checked 2026-10-15. Spot a mistake? Tell us.