You know how somethings can be inspired by something, others can be original, while some are basically writing a new story in the same universe? How about [Original] [Inspired] [Unoriginal] or something. I know a lot of people who don't like role playing in settings based off or replicating already-existing universes. I used to have a roleplay called Sanctuary and it was all original but people thought it was based on some actual show about vampires or some shit. Also blues clues.