Nick Cline
Mar 12, 2026
Iron Lung is a unique watch that sucks you in.
2026 is looking to be a stellar year for horror fans. We are only three months in, and the realm of mainstream and indie horror is making a big name for itself. With that being said, the film Iron Lung has become a favorite so far this year.
Iron Lung is a passion project from multifaceted YouTube personality Mark Fischbauch. He is better known by his YouTube handle, Markiplier. This was a film without any mainstream production company, distribution, or anything of the sort. It was self-funded, self-written, self-directed, and self-advised. It was a project fueled by passion, love for the work, and the artistic endeavor to push the story forward.
The film is based on the 2022 game of the same name. The game explores a desolate moon where a prisoner, confined to a submarine, navigates a sea of blood as a “prison sentence”. The world and lore of the game came into pocket-sized fragments that would unearth the situation. The film takes the bare bones lore and elevates it into a 127-minute film. I describe Iron Lung as a Cosmic Horror project with a deep sense of dialogue, existential angst, and passion for the unfolding unknown.
From start to finish, this is a film that brings the audience right into the situation. It starts with a recounting of the end of days. All life has been wiped out of existence by something called the silent rapture. The only things left are the remnants of mankind and the memories of times past. This bombshell of a monologue transitions to an opening shot of our main character, Simon. He is a prisoner locked away in a submarine that is being used to explore the sea of blood on an unknown moon. He is forced into a situation where he must explore the blood ocean in the hope of being set free from his prison sentence. This is the beginning of a continuous story, driven by a high-stakes series of events.
As the film progresses, the intentions, ideals, horrors, and everything in between come to life. Over time, the stakes of the situation are felt in a slow but high-stakes chain of events. It starts off with Simon finding the bones of a giant alien-like creature, “something” bashing into his submarine, and the eventual dance of delusion and oxygen loss.
The next stages of this review will be dancing the line between spoilers and non-spoilers. I want to offer a breakdown of the project's scope, ripping the magic out of its reveals before you even get to see it. I will try my best because this is a movie that deserves to be watched, not read.
The story progresses till the point of “no return”. The conflict and climax merge into one center of action. It's an unusual way for a film to find its footing, but, overall, it is executed well. Simon finds himself in a pit of self-realization, existential angst, and anxiety of finding clarity and resolution in the situation.
A creature stalks Simon as he slowly “loses” his mind. What is real? What is part of the radiated frenzy of reality? These are the two questions that haunt the narrative from the midpoint of the film until the rolling of the credits.
This locking point in the film kickstarts some of the best visuals and creature design I've seen in a long time. It is baffling that this was a film made for only 3 million dollars, given its size and scope. I could go on and on about the direction this film takes, but that would reveal too much. This film deserves support and viewing. It is a passion project that would get any cosmic horror fan excited.
The monsters, lore, existential dread, twists, twists of reality, visuals, sound design, and so much more make this a good watch for anyone who's a fan of cosmic horror, Markiplier, or story-driven horror.
The only downside I could find is the slow-paced start, but that is something that usually comes with the film's style. Other than that, I had very few complaints as a viewer. It is a unique watch that sucks you into the world if you give it the chance. I couldn't recommend Iron Lung more. Do yourself a favor and give this a watch!
Overall rating: 8.5/10
Questions or comments? Reach out to mixedalternativemag@gmail.com.