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Iron Lung

30 January 2026English2h 5m
out of 10
Mixedlukewarm or divided
Monk Score · 5 scored reviews · 2 not rated

Claustrophobic tension can't outrun a runtime that outstays its welcome.

Verdict tier Mixed, lukewarm or divided, on a scale of Unfavorable, Mixed, Recommended, Exceptional.

  • Praised: claustrophobic atmosphere and tension
  • Criticised: leaden pacing, overlong runtime

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Not streaming in India

Critic consensus

What 7 critics are saying

Critical reception for Iron Lung is mixed, with scores ranging widely and opinion divided along clear lines. Supporters praise its atmospheric, claustrophobic tension and the audacity of its creative ambitions, with several noting it as a credible debut for filmmaker Mark Fischbach. Detractors, however, repeatedly cite leaden pacing and an overextended running time as significant problems, with some arguing the low-budget production lacks the visual or narrative substance to sustain its concept across a feature runtime.

How the 5 scores spread

2 not-rated reviews aren't plotted

Positive / mixed / negative reviews

Positive = 6.5/10 and up · negative = below 5/10

AI-generated summary of 7 critic reviews · may contain errors

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From the papers

Critic reviews (7)

Top critics first, then by score · not-rated last · updated

  1. AvClub

    Film review

    Iron Lung is distinguished by the same creative ambitions that ultimately make its ending seem like a watery solution after such an airtight setup. The film is an undeniable breakthrough for the filmmaker, even if he's got both too much chutzpah and too little experience to stick such a tough landing. Iron Lung's not a flawless debut, but it has a bright future as a cult classic.
  2. IndieWire

    Film review ·

    “Iron Lung” is audacious and at times astonishingly boring. Still, it feels more enthusiastic and celebratory than many blockbuster adaptations built on safer math. Insisting that the mission is bigger than any one person, including its creator, the film opens space for more daring, messy attempts to follow. For indie cinema, that alone may be worth the ordeal… if not, the gallons of blood.
  3. Times Of India

    Film review

    Iron Lung is a stripped-down sci-fi horror film that uses isolation, sound, and suggestion to create a claustrophobic indie horror experience that thrives on tension more than payoff.
  4. EmpireOnline

    Film review ·

    Iron Lung is an interesting little concept, smeared too thin across a far-too-long running time. The pacing throughout is so leaden and monotonous the effect is frankly soporific, and despite Fischbach's arguably admirable intent and exertion, this low-budget sci-fi horror makes Event Horizon look like 2001: A Space Odyssey.
  5. TheGuardian

    Film review ·

    Hopes that Iron Lung is a new Dark Star are soon sunk by the depressive tone, leaden pacing and near-total absence of spectacle; this is basically a radio-play script that insistently has to tell, because this barebones production has nothing much to show.
  6. HorrorPress

    Film review ·

    The debut feature film of writer and director Mark Fischbach, better known to the internet at large as Markiplier, is as surprising as it is atmospheric. It's in the very clear coordination and trust he has with his cast and crew. In a way, the film itself is a mirror of the submersible his character is forced to pilot: flawed, surely, but strong enough to complete its mission and deliver an exceptional experience.
  7. Variety

    Film review ·

    'Iron Lung' from YouTube celebrity Markiplier flatters his directing and acting skills, but the claustrophobic sci-fi horror tale itself wears thin.

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