•THIS IS AN EXPANSION TO THE ARKHAM HORROR CARD GAME: This is not a standalone product. You will need the Arkham Horror: The Card Game core set in order to play with this expansion.
•A LIVING CARD GAME OF ELDRITCH MYSTERY: Something evil stirs in Arkham, and only you can stop it. Blurring the traditional lines between roleplaying and card game experiences, Arkham Horror: The Card Game is the Living Card Game of Lovecraftian mystery, monsters and madness!
•COOPERATIVE GAME: You and your friends become investigators within the quiet New England town of Arkham, Massachusetts. No matter what compels you or haunts you, you'll find both your strengths and weaknesses reflected in your custom deck of cards. These cards will be your resources as you work with your friends to unravel the world's most terrifying mysteries.
•THE CIRCLE UNDONE: Delve into the mysteries of Arkham’s past and uncover its macabre history and the motives of those who dwell in its shadows. This expansion contains a playable prologue and two scenarios as well as new investigators and player cards to further customize your investigations in the world of H. P. Lovecraft’s Mythos.
•NUMBER OF PLAYERS AND AVERAGE PLAYTIME: Arkham Horror: The Card Game is a cooperative, campaign driven card game for 1 to 4 players, and takes 60 to 120 minutes to play.