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Story, Cast, Release Date & Movie Details
About
Iron Lung is a 2026 American independent sci-fi horror film written, directed by, and starring Mark Fischbach (Markiplier) in his feature directorial debut. Based on the acclaimed 2022 indie video game by David Szymanski, the film transforms the game’s terrifying atmosphere into a suspense-filled cinematic experience.
Blending psychological horror, science fiction, and survival elements, Iron Lung follows a lone convict on a deadly mission through an ocean of blood in a post-apocalyptic universe.
Story
Set in a bleak future after a mysterious cosmic catastrophe known as The Quiet Rapture, all stars and habitable planets suddenly vanish, leaving only a handful of survivors aboard isolated space stations and spacecraft.
In a desperate search for resources, humanity discovers a desolate moon named AT-5, home to a vast ocean of blood. To investigate the mysterious sea, authorities send a convicted prisoner on a dangerous mission aboard a tiny submarine known as the Iron Lung.
With no forward window and only grainy camera images to guide him, the convict must navigate the terrifying depths while facing unknown horrors lurking beneath the surface. Promised freedom if he survives, he soon realizes the mission is far more dangerous than anyone imagined. As the submarine descends deeper into the blood ocean, fear, isolation, and unimaginable terror begin to consume him.
cast
Mark Fischbach (Markiplier)
Caroline Kaplan
Troy Baker
Elsie Lovelock
Elle LaMont
Mick Lauer
Sean McLoughlin (Jacksepticeye)
Isaac McKee
Alanah Pearce
Crew
Writer: Mark Fischbach
Director: Mark Fischbach
Editor: Mark Fischbach
Based on the video game by: David Szymanski
Why Watch?
Based on the acclaimed indie horror game
Markiplier’s feature film directorial debut
A unique blend of sci-fi, horror, and psychological suspense
Atmospheric survival story set in deep space
Intense mystery surrounding The Quiet Rapture
Final Verdict
Iron Lung (2026) promises to be a gripping sci-fi horror thriller that captures the claustrophobic terror of the original game while expanding its haunting universe. With its unsettling atmosphere, psychological tension, and compelling survival story, the film is one of the most anticipated horror adaptations of 2026.