This is more of an ongoing background game than some of the others and works best at a dinner party or large gathering. As guests arrive they have a post-it stuck on their back with a Halloween-related character written on it. Your theme could be more specific, such as Horror Movie Killers or even Real Life Serial Killers for the more macabre of you out there. Throughout the evening, guests are allowed to ask questions to determine what is written on their back. The last one to guess must perform a forfeit.