The Exorcist was greenlit for a first season. In February 2008, American playwright John Pielmeier expressed an interest in adapting William Peter Blatty's novel of the same name into a play and soon met with Blatty. He then began working on a script for the play, in which the first draft was completed in ten days. "The Exorcist" first premiered at the Geffen Playhouse, Los Angeles in 2012. A horror VR video game, called "The Exorcist: Legion VR", was published on Steam, Oculus and PlayStation in 2018 and was based on the events of "The Exorcist III". In November 2009, it was
The Exorcist (novel) Cemetery Dance published a special omnibus edition of "The Exorcist" and its sequel "Legion", signed by Blatty (). A limited edition of 750 copies (with an additional 52 leatherbound copies), it is now out of print. On September 27, 2011, "The Exorcist" was re-released as a 40th Anniversary Edition in paperback, hardcover and audiobook editions with differing cover artwork. This new, updated edition featured and revised material, as Blatty writes: "The 40th Anniversary Edition of The Exorcist will have a touch of new material in it as part of an all-around polish of the dialogue and prose. It also features