Eldritch Horror Mountains of Madness Expansion

Fantasy Flight Games


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Explore the haunted vastness of Antarctica in Mountains of Madness, the first side board expansion for Eldritch Horror! Inspired by H.P. Lovecraft's tale of a Miskatonic University expedition ravaged by sinister and inhuman creatures, Mountains of Madness challenges players to confront the terrors that Miskatonic's doomed expedition unearthed. Antarctica's harsh conditions and primeval horrors are brought to life through the side board and accompanying encounter deck, and while new Gates open and new Monsters surface, eight investigators arrive, ready to join your struggles against the Ancient Ones!

This is not a stand alone game.  Eldritch Horror base game required for play!

  • 1-8 Players
  • Ages 14+
  • 2-4 Hours Playtime


  • 1 Game Board
  • 1 Rulebook
  • 8 Investigator Sheets
  • 2 Ancient One Sheets
  • 26 Mythos Cards
  • 48 Location Encounter Cards
  • 64 Research Encounter Cards
  • 6 Other World Encounter Cards
  • 6 Expedition Encounter Cards
  • 24 Special Encounter Cards
  • 14 Mystery Cards
  • 12 Adventure Cards
  • 6 Prelude Cards
  • 8 Artifact Cards
  • 16 Asset Cards
  • 32 Condition Cards
  • 16 Spell Cards
  • 42 Unique Asset Cards
  • 4 Round Overview Cards
  • 22 Monster Tokens
  • 6 Clue Tokens
  • 8 Focus Tokens
  • 6 Gate Tokens
  • 1 Adventure Token
  • 1 Mystery Token
  • 8 Plastic Stands

Game Design:   Corey Konieczka and Nikki Valens

Graphic Design:  Anders Finér, David Griffith, Ed Mattinian, Patrick McEvoy, Dallas Mehlhoff, Emilio Rodriguez, Magali Villeneuve, Drew Whitmore

UPC:   9781616619770

Dimensions:   11.38" x 11.38" x 2.8"

Weight:   2.8 lbs

Publisher:  Fantasy Flight Games

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