Fantasy is a subgenre of television fiction. Of all the genres that exists, fantasy is the most loosely defined. In short, any program that contains elements that could not possibly take place in the real world qualifies as fantasy. Classically, "fantasy" entertainment icluded very mystical tones, such as fairy tales, swords and sorcery, hi-adventure, etc. Your basic Dungeons & Dragons type of crap. As the defintition has expanded however, it now includes anything of the paranormal such as supernatural fantasy, sci-fi fantasy and superhero fiction.