 A new Pacific Adventure deck and Mythos deck replace the base game decks while new investigator, skills, items, spells and ally cards expand the existing decks.The adventure cards in this expansion retain the format and gameplay introduced in the Gates of Arkham expansion where they are placed face down and only revealed when an investigator moves to one.In March 2018, the sixth "boxed" expansion for Elder Sign, called Omens of the Pharaoh, was released.