The Key and the Gate is the fourth deluxe expansion for Call of Cthulhu: The Card Game, introducing 165 cards, three copies each of fifty five individual cards, that open portals to all new terror in the fictional word of H.P. Lovecraft.

With nearly two thirds of its cards serving to develop the identity of Yog-Sothoth and its mysteries and minions, The Key and the Gate is an excellent expansion for fans of the Ancient One and players who like the faction's strengths in discard, recursion, and control rooted in arcane knowledge. Meanwhile, The Key and the Gate introduces Yithians to the Living Card Game format, bolsters Sorcerers with new Spells, and bestows powerful support cards upon each of the other factions, as well as characters with the new Fated keyword.

This is not a stand alone game; a Call of Cthulhu: The Card Game Core Set is required to play.