Thinly plotted, 13 Ghosts is a haunted house movie for the entire family. Castle invented the "Illusion-O" gimmick for the film, special glasses designed to identify the different ghosts. The ghosts are more mischievous than frightening, some prefer to spend their time baking in the kitchen. Each of the thirteen has a distinct trait.
The Simpsons parodied 13 Ghosts on their very first "Treehouse of Terror" special. I even suspect Slimer from Ghostbusters may have been inspired by the film. Margaret Hamilton also appears as the maid of the mansion and confesses to being a witch, her line deliveries are a highlight.