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 version, retitled "", was given a small theatrical release. Blatty directed "The Ninth Configuration", a post-Vietnam War drama set in a mental institution. Released in 1980, it was based on Blatty's novel of the same name. Though it contrasts sharply with the tone of "The Exorcist," Blatty regards "Configuration" as its true sequel. The lead character is the astronaut from Chris' party, Lt. Cutshaw. A made-for-television film, "Possessed" (based on the book of the same name by Thomas B. Allen), was broadcast on Showtime on October 22, 2000, directed by Steven E. de Souza and written by de Souza and