Most of these efforts, however, ultimately stalled in development hell.

Several developments on a theatrical film adaptation of the Barsoom series emerged throughout the 20th century from various major studios and producers, with the earliest attempt dating back to the 1930s. The film chronicles the first interplanetary adventure of John Carter and his attempts to mediate civil unrest amongst the warring kingdoms of Barsoom. John Carter stars Taylor Kitsch in the title role, Lynn Collins, Samantha Morton, Mark Strong, Ciarán Hinds, Dominic West, James Purefoy and Willem Dafoe. The film was produced by Jim Morris, Colin Wilson, and Lindsey Collins.

John Carter is a 2012 American science fiction action film directed by Andrew Stanton, written by Stanton, Mark Andrews, and Michael Chabon, and based on A Princess of Mars (1912), the first book in the Barsoom series of novels by Edgar Rice Burroughs.