Arkham Horror is a cooperative adventure board game designed by Richard Launius, originally published in 1987 by Chaosium. The game is based on Chaosium's roleplaying game Call of Cthulhu, which is set in the Cthulhu mythos of H.P. Lovecraft and other horror writers. The game's second edition was released by Fantasy Flight Games in 2005, with a third edition in 2018.

Fantasy Flight Games (FFG) is a game developer based in Roseville, Minnesota, United States, that creates and publishes role-playing, board, card, and dice games. As of 2014, it is a division of Asmodee North America.