On February 16, 2023, the game's creator David Szymanski jokingly announced on Twitter that a film based on Iron Lung was in development, starring YouTubers Markiplier (real name Mark Fischbach) as "John Iron Lung" and Jacksepticeye (Seán McLoughlin) as "The Fish", with a soundtrack by Andrew Hulshult. On March 8, Fischbach revealed that he would be directing, writing, and acting in a film, but did not specify what it was. On April 21, it was revealed to be film adaptation of Iron Lung, with Hulshult doing the film's music. Finally, on May 7, McLoughlin revealed on Twitter that he would appear in the film as well, bringing the original joke tweet full circle.