YouTuber Markiplier's Self-Made Horror Film 'Iron Lung' Breaks Box Office Records

YouTuber Mark Edward 'Markiplier' Fischbach wrote, directed, and starred in the horror film 'Iron Lung', which became the second most-watched movie in US cinemas during its opening weekend in early February 2026. The film, adapted from David Szymanski's 2022 indie video game, follows a prisoner on a mission in a submarine through a moon's blood ocean. With a budget of $3 million, it grossed $21.7 million in its first weekend, surpassing Brett Ratner's 'Melania' and nearly matching Sam Raimi's 'Send Help'. Distributed by small firm Centurion Film Service and relying on Fischbach's 38-million-strong fanbase, the film expanded from a few dozen screens to 4,000 after fans contacted theater chains. The film reportedly used over 300,000 liters of fake blood, a claimed record. The success demonstrates that a young online audience can sustain a slow-paced, 125-minute film set in a single location, challenging assumptions about attention spans. However, the distribution model may be difficult to replicate for other creators.