The game is inspired by the Lovecraft mythology.
Players choose one of four characters and travel on a random board made of individual tiles. They face monsters which re-spawn until monster generators are destroyed. Monster generation and combat are resolved by rolling dice.
Goals vary with the type of game selected. In a cooperative games and solo play, players must get rid of all monsters. In death match, players must kill each other and are only eliminated when killed by another player.
From the back of the box...
Across time, four souls stumbled upon secrets not meant for mankind, and died... but not before going insane. In the 17th century, a Mariner Merchant visited port of Innsmouth filled with occultists worshipping Cthulhu and mating with Deep Ones. A late 19th century Arctic Explorer escaped the clutches of the Gnoph-Keh to find a hidden city of the Elder Things. At the turn of the 20th century, a Miskatonic Psychotherapist analyzing the dreams of his patients tapped into nightmares of Leng Spiders and Moon-Beasts. In the 1920's, a Private Eye investigating the disappearance of her farming parents revealed Star Vampires and Mi-Gos as the culprits. All four have been given a second chance at life but must relive and overcome their last and most terrifying days.
Cthulhu Mash is an easy to learn, fast paced, expandable, random tile, monster generating game that can be played in under an hour. Not only can the game be played cooperatively, but rules are provided for death match, capture the flag, and solo games as well. Set in the Cthulhu Mythos.