Horror films appeal to audiences by fulfilling the desire to experience fear and disgust without real danger. They use techniques like tension, mystery, gore, and shock to scare viewers while also knowing it is not real. Claiming a film is based on true events also draws in viewers who are intrigued by the idea of seeing a recreation of real murders and crimes, even if it disturbs them. By delivering these fundamental horror elements effectively, films satisfy audiences' craving for new terrifying content with each viewing.