Fantasy is a genre of speculative fiction set in a fictional universe, often without any locations, events, or people referencing the real world. Its roots are in oral traditions, which then became literature and drama. From the twentieth century it has expanded further into various media, including film, television, graphic novels and video games. Fantasy is distinguished from the genres of science fiction and horror by the absence of scientific or macabre themes respectively, though these genres overlap. In popular culture, the fantasy genre is predominantly of the medievalist form. In its broadest sense, however, fantasy consists of works by many writers, artists, filmmakers, and musicians from ancient myths and legends to many recent and popular works..