Markiplier. His Iron Lung Movie: Release Date, Plot, Cast, Trailer, and Where to Watch

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Markiplier Iron Lung Movie Overview

yelzkizi Markiplier. His Iron Lung Movie: Release Date, Plot, Cast, Trailer, and Where to Watch

Iron Lung is a 2026 science fiction horror film that serves as the feature directorial debut of YouTube creator Mark “Markiplier” Fischbach. The movie is an adaptation of the 2022 indie video game of the same name by David Szymanski. Markiplier stars as Simon, a convict sealed inside a small submarine tasked with exploring an ocean of blood on a desolate moon after a cosmic event destroys the stars and planets. This self-financed and self-produced project became a grassroots success and a box office hit, driven by Markiplier’s massive online following of nearly 40 million subscribers.

Iron Lung Movie Release Date and Theatrical Run

The film was released exclusively in theaters on January 30, 2026. While originally planned for a limited release of around 60 U.S. theaters, intense fan demand resulted in a wide national rollout across major chains like AMC, Regal, and Cinemark. The film opened on over 4,000 screens internationally, reaching markets in the United Kingdom, Australia, New Zealand, and Europe. In the UK, the film premiered on January 29, 2026. Strong opening weekend performance led many theaters to extend showtimes beyond the initial one-to-two-week plan.

Where to Buy Tickets for Markiplier’s Iron Lung Movie

Tickets can be purchased through the official Iron Lung website, which features an interactive theater map, as well as through participating theater websites. Pre-sales began on December 5, 2025, following the release of the final trailer. Major platforms such as Fandango and the official apps for AMC, Regal, and Cinemark also list showtimes. Due to high demand and frequent sell-outs, especially for evening and weekend screenings, fans are encouraged to purchase tickets in advance.

Where to Watch Markiplier Iron Lung Movie at Home

As of early 2026, the movie is a theatrical exclusive and is not yet available on streaming platforms. Markiplier has confirmed that a home release is planned, including a physical Blu-ray and DVD edition with bonus features. While specific streaming dates and platforms have not been announced, the film is expected to land on a major service or become available for digital rental/purchase on platforms like Amazon Prime Video, iTunes, or YouTube Movies after the theatrical window closes. Markiplier is also working on digital options for international fans who do not have local theatrical access.

Iron Lung Movie Plot Summary

Set in a bleak future where a cosmic calamity called the “Quiet Rapture” has caused stars and planets to vanish, the plot follows a death row convict named Simon. He is offered freedom in exchange for piloting a welded-shut, one-man submarine through an ocean of blood on a desolate moon. Simon must navigate blindly using only a sensor map and a grainy periscope camera to photograph specific coordinates.

As the mission progresses, the tension escalates through several factors:

The submarine creaks under immense pressure and begins to leak blood.
Photos reveal disturbing images, such as a massive skeleton on the seafloor.
Simon discovers audio logs from a previous pilot suggesting a conspiracy by the authorities.
The hull is dented by unknown external forces, and Simon suffers from hallucinations.
A massive underwater creature begins stalking the vessel.

Communication is limited to a crackling radio with a commanding officer named Ava. The story is a slow-burn thriller centered on Simon’s descent into madness while trapped in a “metal coffin” in a desperate search for humanity’s survival.

Quiet Rapture Explained in Iron Lung

The Quiet Rapture is the catastrophic cosmic event that serves as the backstory for the Iron Lung universe. It refers to a sudden, unexplained phenomenon where all stars and habitable planets in the universe instantaneously vanished. Only humans located on space stations, ships, or small moon colonies survived. This event left the universe in total darkness and forced the remnants of humanity to struggle for survival by scouring the few remaining celestial bodies for resources.

In the film, the Quiet Rapture establishes an atmosphere of cosmic horror and hopelessness. While the cause of the event remains a mystery, its aftermath led to resource wars between surviving human factions, such as “Eden” and the “Consolidation of Iron.” The protagonist, Simon, is a former soldier from these conflicts who was eventually imprisoned. The event underscores the desperation of humanity, as they are willing to send a convict on a one-way mission into a sea of blood just for a chance at salvation.

Ocean of Blood Explained in Iron Lung

The setting of the film is a vast sea composed of blood rather than water, located on a remote moon discovered after the Quiet Rapture. A central mystery of the plot is the origin of this fluid. Simon’s investigation eventually confirms that the ocean is composed of human blood and organic matter, suggesting it may be the liquefied remains of those lost during the cosmic cataclysm.

Thematically, the ocean of blood represents collective suffering and sacrifice. It creates a grotesque and alien environment where the fluid eventually begins to leak into and invade the submarine. The crimson sea is home to a massive creature that has adapted to the environment. Hints of a “godly light” beneath the surface suggest the presence of an unfathomable power or entity, adding a layer of cosmic mystery to the visceral body horror.

Iron Lung Submarine Explained

The Iron Lung is the small, ramshackle one-man submarine where almost the entire movie takes place. Its name is a grim reference to the medical device, as the sub is essentially a “rusty metal coffin” keeping the pilot alive. For safety and to ensure the mission is completed, the hatch is welded shut from the outside, and the single porthole is sealed with metal. Simon is completely isolated and must navigate using coordinates and an X-ray periscope camera that prints grainy monochrome photos.

The interior of the sub is cramped and analog, featuring dripping pipes, alarms, and a limited oxygen supply. While the vessel provides Simon’s only protection against the intense pressure and the horrors of the blood ocean, it also serves as his prison. As the story progresses, the submarine sustains damage from an unknown sea creature, highlighting its fragile condition and the high stakes of the mission.

Is Markiplier’s Iron Lung Movie Based on the Iron Lung Game?

Yes, the film is a direct adaptation of the 2022 indie video game created by David Szymanski. Markiplier, who played the game on his YouTube channel, secured the rights to adapt it after being captivated by its atmosphere. The film is a faithful adaptation of the game’s core premise, including the Quiet Rapture, the blood ocean, and the claustrophobic submarine mission.

David Szymanski was involved in the production as a consultant for the screenplay and has a cameo in the film. While the movie captures the dread and major elements of the game, Szymanski has stated that the film exists in a “separate canon” from the game. This allows the movie to stand as a self-contained sci-fi horror experience while respecting the source material.

Iron Lung Game vs. Movie Differences

While the movie honors the spirit of the game, several differences exist to adapt the story for a feature film:

Scope and Story: The game is minimalistic with a vague narrative. The movie expands the lore, introducing backstories for Simon and detailing the conflict between human colonies like Eden and the Consolidation of Iron.
Characters: In the game, the player is an unnamed, solitary individual. The movie gives the protagonist a name (Simon) and a personality. It also adds a radio crew, including characters like Ava and a mechanic named Jack (played by Jacksepticeye), to create dialogue and interpersonal conflict.
Presentation of Horror: The game relies on the player’s imagination and simple audio-visual cues. The movie provides more concrete visuals, including hallucination scenes and a more elaborate climax involving the sea creature.
Canon and Details: The movie is a separate canon, allowing for a clearer resolution regarding the submarine’s black box and a more definitive ending to the creature encounter compared to the game’s abrupt conclusion.

Markiplier Wrote, Directed, Edited, and Produced Iron Lung

Mark “Markiplier” Fischbach maintained nearly total creative control over Iron Lung, serving as the film’s writer, director, lead actor, and editor. This project marks his feature directorial debut and was produced through Markiplier Studios. Markiplier intentionally kept the venture independent to ensure creative freedom and to demonstrate that content creators can produce legitimate feature films without traditional studio backing. He co-produced the film alongside Will Hyde and Jeff Guerrero, with game creator David Szymanski serving as a script consultant.

The film’s production was highly efficient; principal photography began in March 2023 and concluded by May 1, 2023. Markiplier reportedly turned down a role in the Five Nights at Freddy’s movie to focus on this project. He spent over a year in post-production, personally refining the edit and sound design to achieve a specific atmospheric tension. The resulting film reflects his personal storytelling style, including his signature timing and a mix of dread with dark humor.

Iron Lung Movie Cast and Characters

While Markiplier is the primary on-screen presence, the film features a supporting cast that enriches the narrative through voice acting, radio communications, and brief appearances:

Mark “Markiplier” Fischbach as Simon: A convict forced to pilot the Iron Lung submarine.
Caroline Rose Kaplan as Ava: The mission commander who guides Simon via radio and appears briefly on video feed.
Troy Baker as David: A surface-level mechanic and engineer who provides technical support to Simon.
Seán “Jacksepticeye” McLoughlin as Jack: A mechanic on the surface who provides early levity and appears physically during a mission mishap.
Elsie Lovelock as “The Speaker”: A research lead from the previous failed SM-8 mission whose audio logs provide cryptic lore.
Elle LaMont as “The Whisper”: A research assistant from the SM-8 mission who appears in Simon’s hallucinations.
Mick Lauer as the Previous Pilot (SM-13): The voice behind the audio logs found by Simon, revealing the fate of a predecessor.
David Szymanski as Himself: The game’s creator appears in a video log as a scientist.
Alanah Pearce as “A Familiar Voice”: A cameo providing minor vocal lines.

Additional vocal cameos from the gaming and YouTube communities include Rahul Kohli, Rachell “Valkyrae” Hofstetter, Ethan Nestor, and Mika Midgett.

Is Jacksepticeye in Markiplier’s Iron Lung Movie?

Yes, Seán McLoughlin (Jacksepticeye) appears in the film as a supporting character named Jack. Jack is a technician stationed on the moon’s surface who communicates with Simon via radio. While his role is primarily vocal featuring his recognizable Irish accent and some light banter McLoughlin also makes a brief physical appearance. He can be seen suited up as a crewman during a scene set on the moon’s surface, confirming he was present on set during production. His inclusion serves as a crossover for fans of the two creators’ long-standing friendship and collaborative history.

Iron Lung Movie Runtime and Rated R Rating

Markiplier’s Iron Lung has a runtime of approximately 125 minutes (2 hours and 5 minutes). The film uses this duration to employ a slow-burn pace that builds tension and explores expanded lore. The movie is rated R in the United States due to strong language and gruesome content. The protagonist uses frequent profanity, and the film features disturbing imagery, including a submarine flooding with blood, body horror elements like blistering flesh, and intense creature attacks. While it lacks sexual content or drug use, its international ratings, such as the UK’s 15 rating, reflect the same intensity of horror and language.

Iron Lung Movie Budget and Box Office Performance

The film was produced on a modest budget of approximately $3 million, which Markiplier largely self-funded. Despite the low budget, the production utilized practical effects, a functional submarine set, and CGI. As of early February 2026, Iron Lung has grossed over $30.5 million worldwide, representing a massive return on investment. It debuted at #2 domestically with an $18 million opening weekend and earned $8.9 million on its opening day alone. The film’s financial success was achieved without a traditional advertising campaign, relying instead on Markiplier’s social media presence and fan word-of-mouth.

How Markiplier Released Iron Lung Independently Without a Major Studio

Markiplier bypassed the traditional Hollywood studio system through several independent strategies:

Self-Financing: He funded the project through Markiplier Studios, retaining full creative control and ownership.
Grassroots Distribution: Originally planning a very limited release, Markiplier encouraged fans to request the movie at local theaters. This resulted in major chains like AMC, Regal, and Cinemark picking up the film, expanding the release to over 4,000 screens worldwide.
Digital Marketing: Rather than using multi-million dollar ad campaigns, he promoted the film through his YouTube channel, behind-the-scenes vlogs, and trailers that reached millions for free.
Direct Negotiation: He negotiated directly with theater chains and worked with Piece of Magic Entertainment for international distribution.

Iron Lung Movie Filming Locations and Behind the Scenes

The movie was filmed over an eight-week period in early 2023 at Troublemaker Studios in Austin, Texas. Key production details include:

Practical Set: A life-size, functional submarine cockpit was constructed on hydraulics to simulate movement and could be partially submerged.
Practical Effects: The production used a massive amount of fake blood made from syrup and dye. Markiplier performed while submerged in this fluid, even requiring medical attention for eye irritation caused by the substance.
Commitment: Markiplier prioritized the project by turning down a role in the Five Nights at Freddy’s movie to focus on directing and starring in Iron Lung.
Technical Team: The film featured cinematography by Philip Roy and a score by Andrew Hulshult, while Markiplier handled much of the editing himself.

Andrew Hulshult Iron Lung Movie Soundtrack

The film’s soundtrack was composed by Andrew Hulshult, known for his work on video games like Dusk and Doom Eternal. The score blends ambient tones, industrial rhythms, and electronic elements to mirror the “old tech” atmosphere of the submarine. Hulshult wrote over two hours of music that is deeply integrated with the film’s sound design, often blurring the lines between the score and the sound effects of the submarine. The soundtrack has been released as an album on major music platforms.

How Much Fake Blood Was Used in the Iron Lung Movie

Iron Lung set a world record for the most fake blood used in a single film production, utilizing over 80,000 gallons (approximately 300,000 liters). This surpassed the previous record held by the 2013 Evil Dead remake, which used 50,000 gallons. The production required such a massive volume because the submarine set was flooded multiple times and included external ocean scenes.

The blood was a syrup-based mixture of varying thicknesses. Exposure to the substance caused Markiplier’s skin to stain red for days and resulted in a hospital visit to flush his eyes due to severe irritation. The commitment to practical effects over CGI provided a visceral, tangible quality to the film, culminating in a climactic implosion scene involving a massive release of fluid and debris.

Iron Lung Movie Trailer and Final Trailer Breakdown

The marketing campaign progressed from a cryptic teaser in April 2023 to a final trailer on December 5, 2025.

Teaser Trailer: Established the atmosphere and the “Quiet Rapture” premise.
Official Trailer: Introduced plot hints, radio dialogue, and glimpses of equipment, while confirming a theatrical release.
Final Trailer: Released weeks before the premiere, this trailer used sound design and grainy, monochrome flash-cuts to build anxiety. It highlighted the character Simon (Markiplier) drenched in blood and introduced the mission commander Ava. It teased a massive underwater creature and the sub’s hull integrity failing without fully revealing the monster.

The trailers focused on tone and mystery, helping drive ticket pre-sales and a high level of fan engagement on social media.

Iron Lung Movie Reviews and Rotten Tomatoes Rating

Critical reception for Iron Lung was mixed, while audience response was more positive.

Rotten Tomatoes: Holds a critics’ score around 58% (Mixed) and a significantly higher audience score in the 80–90% range.
Metacritic: Received a score of 44/100, indicating “mixed or average” reviews.

Critics were split; some, like IGN (4/10) and The Guardian (2/5), criticized the slow pacing and repetitive nature of the solo setting. Others, like Variety and RogerEbert.com (2.5/4), praised the sound design, atmosphere, and production design. Polygon compared its experimental nature to indie horror like Skinamarink. Audience members and horror outlets praised the film’s authenticity to the game, its unsettling dread, and its practical effects.

Iron Lung Movie Ending Explained

The ending of Iron Lung follows the conventions of cosmic horror through a series of grim developments:

The Mission: Simon reaches the sunken SM-8 submarine, retrieving a black box that confirms the ocean is made of human blood and contains data on a mysterious “light” below.
The Sacrifice: Suffering from radiation sickness and leaking fluid, Simon hears a mysterious voice urging him to destroy the data. Instead, he trusts Commander Ava’s plea and attaches the black box to a buoy, ensuring it will float to the surface.
The Confrontation: A massive creature attacks the sub. Simon sabotages the hull to trigger an intentional implosion, killing himself and presumably the creature simultaneously.
The Final Image: Simon dies in the implosion. On the surface of the blood ocean, the black box buoy floats alone with its beacon blinking, leaving it ambiguous whether humanity will ever recover the data.

Thematically, the ending emphasizes cosmic indifference and the cycle of sacrifice, offering no clear resolution or rescue for the protagonist.

Iron Lung Movie Post-Credits Scene

Iron Lung does not contain a post-credits scene. Markiplier chose to leave the ending ambiguous rather than including a sequel teaser. The credits themselves feature a montage of behind-the-scenes Polaroid photos showing the cast and crew on set, but there is no additional narrative content or dialogue after the credits conclude. The film ends definitively with the shot of the floating life vest and the black box beacon.

Will There Be an Iron Lung Movie Sequel?

No sequel to Iron Lung has been officially announced. The film was conceived as a standalone adaptation, and the protagonist’s fate at the end does not easily allow for a direct continuation. Markiplier has expressed that he made the film as a passion project rather than the start of a franchise, and game creator David Szymanski stated the movie exists in a separate canon “for now.”

However, the film’s financial success grossing over $30 million on a $3 million budget has led to speculation. There is expanded lore from the game that could be explored, such as the source of the Quiet Rapture or the mysterious “Light” entity. Potential directions for future projects could include a prequel about the failed SM-8 mission, an anthology series, or a spiritual successor in the same universe. While Markiplier has not ruled out a return to filmmaking, he has indicated he may pursue different stories next.

Iron Lung Fan Art in Blender

The visual style of Iron Lung has inspired 3D artists to create fan art in Blender. Digital creator Yelzkizi offers several tools that can assist in these projects:

PixelHair: A collection of 3D hair assets compatible with Blender and Unreal Engine’s MetaHuman. This allows artists to quickly add realistic hair to characters in the Iron Lung universe without manual grooming. The tool is being updated to support Blender’s new Geometry Nodes-based hair system for better customisation.
The View Keeper: A Blender add-on for camera management. It allows artists to store multiple camera angles on a single object and batch-render them. This is particularly useful for creators attempting to render complex submarine interiors from various perspectives or creating cinematic animations.

Frequently Asked Questions (FAQs)

When was Markiplier’s Iron Lung movie released?
Iron Lung was released in theaters on January 30, 2026. It had a theatrical-only debut, rolling out in North America on that date (with some international releases like the UK on Jan 29). So, late January 2026 was the time fans finally got to see it.
Is Iron Lung movie based on a video game?
Yes. The movie is an adaptation of the 2022 indie horror game Iron Lung created by David Szymanski. Markiplier played and loved the game, which inspired him to turn it into a film. The plot, setting, and title are directly taken from the game, though the movie expands on the story.
Where can I watch Markiplier’s Iron Lung movie?
Currently, Iron Lung is only available in theaters (it was a theatrical exclusive upon release). It’s not on any streaming service as of now. However, Markiplier has confirmed the film will come to streaming platforms and get a DVD/Blu-ray release after its theatrical run. No specific streaming service or date has been announced yet, but it’s expected to be available for home viewing a few months after the cinema release.
Did Markiplier really fund Iron Lung himself?
Yes, Markiplier self-financed and produced Iron Lung. The production budget was relatively low, around $3 million, and he covered it largely through his own funds (and co-producers Will Hyde and Jeff Guerrero). There was no major studio – Markiplier essentially paid for and made the movie independently, which is part of why its box office success is so impressive.
Who stars in the Iron Lung movie?
The film’s star and lead is Markiplier (Mark Fischbach) himself, playing the convict Simon. Other key cast members include Caroline Rose Kaplan as Ava (the mission commander), Troy Baker as David (a crew member), Seán “Jacksepticeye” McLoughlin as Jack (another crew member), Elsie Lovelock and Elle LaMont as voices of researchers, and a cameo by David Szymanski (the game’s creator). It’s mostly Markiplier on screen, with others heard via radio or brief appearances.
Is Jacksepticeye in Iron Lung?
Yes. Jacksepticeye (Seán McLoughlin) has a small role in the movie as a character named Jack, one of the submarine technicians. You hear his voice over the radio and see him briefly on screen in a surface scene. It’s a cameo that fans of Mark and Jack will appreciate, though it’s not a large part.
How long is the movie and why is it rated R?
The runtime of Iron Lung is about 125 minutes (2 hours 5 minutes). It’s rated R (Restricted) for strong language and gruesome/bloody horror images. There’s a lot of fake blood (the film literally has an ocean of blood) and some intense scenes, plus frequent swearing. There’s no nudity or sexual content – the R rating is mainly for violence/gore and profanity.
How much money did Iron Lung make at the box office?
Iron Lung was a surprise hit. It grossed over $30 million worldwide against its $3M budget. In its opening weekend in the US, it made about $18M and came in #2 at the box office. The strong earnings (10x its budget) make it one of the most successful indie horror releases in recent years.
Does Iron Lung have a post-credit scene or Easter egg at the end?
No, there is no post-credit scene in Iron Lung. Once the movie ends and the credits roll, there are no additional story scenes. The credits do show some fun behind-the-scenes Polaroid photos of the cast and crew, but there’s no extra teaser or Marvel-style stinger. The ending is the ending – no hidden footage after that.
Will there be a sequel to Iron Lung?
As of now, no sequel has been announced. Iron Lung was made as a standalone story, and it has a pretty definitive ending. Markiplier hasn’t indicated any immediate plans for Iron Lung 2. However, he hasn’t ruled it out entirely either – the movie’s success means a sequel is at least possible if a good story and opportunity arise. But currently, there’s nothing official about a sequel, so we’ll have to wait and see if Markiplier decides to continue the saga or create a new project instead.

Conclusion

Markiplier’s Iron Lung is a significant crossover between digital content creation and traditional cinema. By self-financing, directing, and starring in the project, Markiplier demonstrated the power of independent distribution and community mobilization. The film set a record by using 80,000 gallons of fake blood and earned “universal acclaim” from fans for its atmospheric, slow-burn approach to cosmic horror.

The narrative concludes with the haunting image of a signal beacon floating in an ocean of blood, serving as a definitive end for the protagonist while leaving the state of the universe ambiguous. Whether or not a sequel is ever produced, Iron Lung stands as a successful case study for creators transitioning into feature filmmaking.