On Halloween night, each player holds a big party in their dark castle and tries to attract the most interesting people — vampires, ghosts, and other monsters. Regularly, there is a knock on your door — knock, knock! — and you must decide whether to open or not. Of course, every player tries to open to the nicest people and to avoid unwelcome visitors such as pure souls that will scare your guests as well as vampires sent by your opponents to lure your best guests into their castle.