Fright Night: Haunted House is one of seven mini games based on the d20 system, requiring the 3.0 Dungeons & Dragons Player's Handbook.

The first half of the book contains six psychic character classes, with new skills and feats provided for the psychic classes as well as to supplement the PHB skills and feats for a modern era game. Also included are changes to the existing rules, to emphasize horror elements and rules for fear and insanity.

The second half of the book is an adventure detailing a haunted house, which the PC's are vacationing in a haunted house. There they are arranged into teams to try and scare each other, with a million dollars at stake for the team that does the best job. Eventually the real horrors are discovered and the adventure moves into a more standard horror story. Emphasis on psychological over physical horror.