Iron Lung (film)

Iron Lung is a 2026 American independent science fiction horror film written, edited, and directed by Mark "Markiplier" Fischbach. It is based on the 2022 video game by David Szymanski. It stars Markiplier, Caroline Kaplan, Troy Baker, Elsie Lovelock, Elle LaMont, Mick Lauer, Seán McLoughlin (Jacksepticeye), and Isaac McKee. The plot follows a convict named Simon (Markiplier) who is forced to pilot a submarine through an ocean of blood on a desolate moon; following an post-apocalyptic event known as the "Quiet Rapture" that caused all the stars and most planets along with their human inhabitants to disappear without warning.

Development on an Iron Lung film adaptation began in April 2023, when Markiplier announced he would be adapting the game into film. Markiplier, who had previously played Iron Lung on his YouTube channel, stated it would be self-written, self-financed, and star himself alongside Kaplan. Szymanski had been involved with it since pre-production, assisting with its screenplay and being on set during filming.

Iron Lung was self-released by Markiplier in North America on January 30, 2026. The film received mixed reviews from critics, but has been a commercial success, grossing $51 million against a production budget of a little over $3.6 million.