Iron Lung

On January 30, 2026, a film called Iron Lung arrives from Markiplier Studios, placing a convict inside a small submarine and dropping that submarine into an ocean of blood on a desolate moon. That sentence requires some unpacking, and the film's premise rewards the effort.

The setup belongs to a subgenre of science fiction horror that could be called cosmological despair — stories in which the universe itself has been rendered hostile or simply erased, leaving human survivors to navigate what remains. Here, the inciting catastrophe is an event referred to as "The Quiet Rapture," which caused all known stars and habitable planets in the universe to disappear. The name carries theological weight, invoking the Christian eschatological concept of sudden divine removal while stripping it of any promise of salvation. Whatever the Rapture was, it left behind a universe of darkness and, apparently, at least one moon with a liquid surface — though that liquid is blood rather than water. The film's central question, at least structurally, is what a convict sent to search that ocean might find.

The title itself points toward a specific piece of medical history. An iron lung is a negative-pressure ventilator, a sealed metal cylinder that kept polio patients breathing by mechanically expanding and contracting around their torsos. The technology represented both life-saving ingenuity and a kind of entrapment — patients were kept alive but immobilized, dependent on a machine that enclosed them entirely. Renaming a submarine after that device is not an accident. It frames the vessel as something that sustains life while also confining it, and it suggests that the film is interested in claustrophobia not just as a physical condition but as an existential one. The convict protagonist is already a person whose freedom has been curtailed; placing that person inside a machine named after medical confinement, floating through an ocean of blood on a lightless moon, compounds the metaphor to a degree that feels deliberate.

Markiplier Studios is the production entity behind the film. Markiplier — the online identity of Mark Fischbach, a creator who built one of the largest audiences on YouTube through gaming commentary and horror-adjacent content — has been expanding into longer-form narrative work, and Iron Lung represents a continuation of that trajectory. The film is adapted from a short indie horror game of the same name, created by YouTuber and game developer Dave Szymanski and released in 2022. The game is notable for its extreme brevity and its conceptual economy: the player controls a submarine navigating a blood ocean on a moon that has lost its sun, with no view of the exterior except through a camera system that captures still photographs of what surrounds the vessel. The horror is almost entirely constructed from implication — sounds, corrupted images, the texture of not knowing what is out there. Translating that experience to a feature film presents an obvious challenge, since cinema is a medium that tends to eventually show what it has been withholding.

What the film's known parameters do not yet reveal is how that translation has been handled — whether the movie preserves the game's commitment to the unseen or eventually resolves into something more conventional. The game's horror operates through a specific kind of information deprivation that is native to interactive media, where the player's own imagination fills the gaps. A film, by contrast, controls what the audience sees entirely, which is both a constraint and a tool. Whether Iron Lung uses that control to sustain ambiguity or to deliver revelation is not something the available information answers.

Equally open is the question of tone and pacing. The game can be completed in under an hour, which means the film's screenplay — assuming a standard feature runtime — has added significant material to a very spare source. What that material is, whether it expands the backstory of the Quiet Rapture, develops the convict's history, or introduces new presences in the blood ocean, is unknown from what has been made public. The Metascore of 54 and IMDb rating of 6.5, drawn from post-release data already present in the metadata, suggest a response that is neither dismissive nor enthusiastic — a film that found its audience without converting skeptics, which tracks for a horror adaptation built around an obscure source material and a production house better known for digital content than theatrical releases.

The film is currently available to rent or purchase through Google Play Movies and YouTube, with no streaming platform listed, meaning it has not landed on a subscription service as of the data available here.

Iron Lung is likely to draw viewers who came to the source game through the horror gaming community, where the original held a particular reputation for efficient dread, as well as audiences who follow Markiplier's creative output as it has moved beyond commentary into production. Beyond those specific constituencies, the film's premise — cosmic horror in the tradition of narratives where the universe is not merely indifferent but actively denuded — positions it for viewers interested in science fiction that treats its speculative elements as vehicles for atmosphere rather than explanation. Whether the blood ocean yields answers or withholds them may be the film's defining choice.