Mark Fischbach, widely known as YouTube creator Markiplier, makes his feature-length directorial debut with “Iron Lung,” a science fiction horror film scheduled for theatrical release on January 30, 2026.
The film is based on David Szymanski’s acclaimed 2022 indie video game of the same name. Produced by Markiplier Studios and starring Fischbach himself alongside actors like Caroline Rose Kaplan and Sean McLoughlin, the movie adapts the claustrophobic submarine adventure into a full-length cinema experience.
The film follows a condemned prisoner forced to pilot a cramped submarine nicknamed the “Iron Lung” across a literal ocean of blood on a desolate moon. This mission takes place in a post-apocalyptic universe after a mysterious event called “The Quiet Rapture” causes all known stars and habitable planets to vanish from existence.
The R Rating Explained
The Motion Picture Association has assigned “Iron Lung” an R rating for language, bloody images, and gore. This rating designation serves as a warning to parents and guardians that the film contains content not appropriate for children under 17 without parental accompaniment.
The film’s visual content is particularly intense. During production, the movie earned recognition for using approximately 80,000 gallons of fake blood, reportedly setting a world record for the most artificial blood used in a single motion picture. To put this into perspective, this surpasses the 50,000 gallons used in the 2013 film “Evil Dead.”
What Does the R Rating Actually Mean?
An R rating indicates that children under 17 require parental consent to view the film in theaters. The specific content warnings in this case highlight three categories: language (including profanity), bloody images (visual depictions of blood and violence), and gore (graphic depictions of injury and death).
For “Iron Lung,” the bloody images and gore primarily stem from the film’s setting: an ocean composed of human blood. This creates an inherently grotesque and visually disturbing environment throughout the narrative. Characters encounter remnants and creatures within this crimson ocean, leading to graphic imagery that forms a central element of the horror experience.
Is It Fine for Teens to Watch?
For younger teens (13-15 years old): Parents should exercise significant caution. The combination of intense gore, pervasive bloody imagery, and mature language makes this film better suited for older viewers. The claustrophobic submarine setting, paired with graphic horror elements, could prove genuinely unsettling for younger teenagers.
For older teens (16-17 years old): These viewers may handle the content better, particularly if they have previous experience with horror films. However, individual maturity levels vary considerably. Some 16-year-olds may find the film’s sustained atmosphere of dread and graphic content overwhelming, while others, accustomed to horror cinema, might manage it appropriately.
Key considerations:
The R rating exists for a reason. The Motion Picture Association applies these designations based on cumulative content rather than isolated scenes. In this case, the rating reflects ongoing exposure to gore, blood, and profanity throughout the film’s runtime.
The psychological toll of the film should factor into decisions as well. “Iron Lung” centers on a character trapped in a confined space, creating prolonged tension and isolation. Combined with the grotesque imagery, this can produce anxiety in sensitive viewers regardless of age.
Individual sensitivity matters significantly. A 15-year-old who regularly watches horror films and handles scary content well may tolerate “Iron Lung” better than a 17-year-old new to the genre or easily disturbed by gore and body horror.
What Parents and Guardians Should Do
Parents considering allowing teenagers to see “Iron Lung” should first watch the film themselves or review detailed parental guides available online. These resources specifically outline scenes containing language, gore, and disturbing imagery.
Open communication helps. Discuss with your teenager why they want to see the film. Are they drawn to the science fiction elements? Are they fans of Markiplier? Understanding their motivation helps parents make informed decisions.
Consider compromise options. If teenagers are interested in Markiplier’s directorial work but you feel “Iron Lung” is too intense, you might explore his other projects like “The Edge of Sleep,” which offers different content.
The Bottom Line
While the R rating is not an absolute prohibition for teenagers, it represents a legitimate warning about significant content. The decision ultimately rests with parents and guardians who understand their individual teenager’s maturity level, sensitivity to gore, and previous exposure to horror content.
Those under 17 technically require parental accompaniment in theaters, though enforcement varies by location and theater. Regardless of the rules, the content warning suggests that most younger teens would benefit from waiting until they’re older to experience this particular film.
For mature teenagers with established tolerance for horror films and parental permission, “Iron Lung” may be watchable. However, younger teens or those unaccustomed to graphic horror content should probably avoid this title and explore age-appropriate alternatives instead.