Fantasy: it's stuff with magic in it, not counting Psychic Powers, or Magic from Technology, or anything meant to frighten, or Magical Realism, or anything strongly religious, or the technology behind the magic that is Magitek, or — where did that clean-cut definition go? While the core of the fantasy genre is clear enough, there is no succinct definition that encompasses it all. The boundary with Science Fiction is notoriously ambiguous and the boundary with horror is often no less fuzzy.