Markiplier's 'Iron Lung' Brings Passion Back to Horror Films

The YouTuber-turned-director's low-budget sci-fi horror film is a hit with audiences.

Published on Feb. 10, 2026

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Markiplier, the popular YouTuber, has made his directorial debut with the sci-fi horror film 'Iron Lung,' which is based on a 2022 Windows game he played on his channel. The film, set in a post-apocalyptic world where all stars and habitable planets have vanished, follows a convict named Simon who is sent to explore a bloody sea on an unknown moon in a submarine called the 'Iron Lung.' With a budget of only $3 million, the film has grossed over $21.7 million worldwide and has been praised for its suspense, eerieness, and the clear passion and dedication put into the project.

Why it matters

In an era where many modern films are seen as low-effort and driven by big-budget numbers rather than genuine artistry, 'Iron Lung' stands out as a refreshing example of what can be achieved with passion, creativity, and a relatively small budget. Markiplier's transition from popular YouTuber to director has proven that talented individuals can still make compelling, original horror films without relying on A-list actors or massive production values.

The details

The film is set entirely within the confines of the 'Iron Lung' submarine, as the main character's mental state deteriorates during his exploration of the bloody moon. With very little CGI and a small set, the film was produced entirely by Markiplier's own studio, showcasing his commitment to the project. The film even set a record for the most fake blood used in a horror film to date at 80,000 gallons.

  • The film was released in theaters on January 30, 2026.
  • It grossed over $21.7 million worldwide during its opening weekend.

The players

Markiplier

A popular YouTuber who has entertained millions for over 10 years. He wrote, directed, and starred as the lead in the film 'Iron Lung.'

David Szymanski

The developer and publisher of the 2022 Windows game 'Iron Lung,' which the film is based on.

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What they’re saying

“This film was a true breath of fresh air. It was so clear how much passion and work was dedicated to this project.”

— Kennedy Rettig, Film Critic (stauntonstartimes.com)

What’s next

The film's success has led to speculation about a potential sequel or further collaborations between Markiplier and the 'Iron Lung' game developer.

The takeaway

Markiplier's 'Iron Lung' proves that talented individuals can still create compelling, original horror films without relying on big-budget production values. The film's success highlights the enduring appeal of passion-driven projects in an era of often formulaic and low-effort entertainment.