In 2006, Black Flame produced the novel for the New Line Cinema's feature film Snakes on a Plane. In October 2003 BL Publishing started a sister imprint, Black Flame, which applied the same pulp styling to novels featuring New Line Cinema characters such as Freddy Krueger and Jason Voorhees, and 2000 AD comics' Judge Dredd and others. Black Library's catalogue now runs to well over two hundred titles, with a Warhammer and a Warhammer 40,000 novel appearing every month. Their first art book, Inquis Exterminatus was published in May, 1999.

Inferno!'s success spawned Warhammer Monthly comic books, and then from September 1999 a lengthy series of fantasy and science fiction novels. Black Library began as team at Games Workshop brought together to INFERNO! magazine. The Black Library was founded in April 1997 to publish Inferno! magazine, a bi-monthly digest-sized anthology of short stories, comic strips and features from the Warhammer worlds. The fictional Black Library is where the Eldar race keeps their collected knowledge of Chaos and the Necrons. The publishing company takes its name from the fictional Black Library that appears in the setting of Warhammer 40,000. The result is a fusion of tabletop gaming with science fiction and fantasy writing. These works are then promoted with contributions of stories, plot synopses, and rules in the White Dwarf magazine and at the official Games Workshop website. The authors of these novels, graphic novels, and comics created original storylines and characters that are based on playable armies in the main Warhammer 40,000 game and its many spin-offs (such as Inquisitor or Epic). Some of Black Library's best known titles include the Gaunt's Ghosts and Eisenhorn series of novels by Dan Abnett and the Gotrek and Felix series by William King and Nathan Long.

The Black Library is a division of Games Workshop (formerly a part of BL Publishing) which is devoted to publishing novels and audiobooks (and has previously produced art books, background books, and graphic novels) set in the Warhammer Fantasy Battle, Warhammer Age of Sigmar and Warhammer 40,000 fictional universes.

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