Fan fiction or fanfiction (also abbreviated to fan fic, fanfic, fic or ff) is fictional writing written in an amateur capacity as fans, unauthorized by, but based on an existing work of fiction. The author uses copyrighted characters, settings, or other intellectual properties from the original creator(s) as a basis for their writing. Fan fiction ranges from a couple of sentences to an entire novel, and fans can both keep the creator's characters and settings and/or add their own. It is a form of fan labor. Fan fiction can be based on any fictional (and sometimes non-fictional) subject. Common bases for fan fiction include novels, movies, bands, and video games.