Originally posted online as a riff on the Twilight fan-fiction series Masters of the Universe, the story soon got picked up as an eBook, spawned two sequels and sold over a quarter of a million copies online.

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L. James wrote the precursor to Fifty Shades of Grey online as fan fiction and self-published it on her own website before Vintage acquired it.

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The movie delivers the kind of pleasures usually reserved for fan fiction or playground stand-offs.

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He wrote fan fiction and went on to write his own 200-page fantasy story.

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Club Penguin fan fiction and lore are continually being generated from player-run blogs, discussions within the playspace, YouTube, and social media.

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His fan base is so loyal that many of his grown-up fans have migrated to his young-adult fiction, Mr. Coben and his publisher say.

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