Eldritch Horror is a cooperative board game for one to eight players, where participants work together to solve mysteries, collect clues, and prevent the Ancient Ones from unleashing chaos. Players take on the roles of investigators, each with distinct skills, as they travel the globe to stop an impending catastrophe. The game features formidable adversaries—Ancient Ones with unique abilities—that challenge players through tense encounters. The gameplay includes thematic Mystery and Research card decks tailored to each Ancient One, deepening the narrative experience. The components consist of twelve investigator figures, more than 300 cards, and 250 tokens, providing a detailed and varied gameplay experience. The game emphasizes strategy, teamwork, and decision-making as players navigate a world threatened by supernatural forces.