- Despite a limited international release, Iron Lung earned $17.8m in the US, landing second on domestic charts.
- The film opened across 3,015 theatres and outpaced higher budget rival, Send Help in pre-release social media reach.
- The adaptation is based on David Szymanski’s 2022 indie horror game, which has sold an estimated 310,000 copies on Steam.
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The live-action adaptation of Iron Lung has emerged as a breakout box office performer, pulling in $21.5 million worldwide on its opening weekend.
Written and directed by lead actor Mark Fischbach, who also goes by Markiplier on YouTube, the film had a modest production budget of around $3m.
Despite a limited international rollout, it generated $17.8m of its opening weekend total in the US, finishing second on the domestic charts behind Send Help, a higher-budget release from Sam Raimi.
Iron Lung opened across 3,015 theatres. According to RelishMix, the film entered the weekend with a larger combined social media reach than Send Help, driven largely by YouTube and a late surge on TikTok.
Transmedia wave
The film is based on the 2022 indie horror game by David Szymanski, which casts players as the pilot of a rusting submarine navigating an ocean of blood on a distant moon.
The game has sold an estimated 310,000 copies on Steam and was later launched on Switch, PS5 and Android.
While its opening trails the $80m debut of Five Nights at Freddy’s, Iron Lung’s far lower budget makes it a notably successful outing and a clear example of how creator-led audiences can translate into box office success.
The Super Mario Galaxy Movie remains on track to release on April 1st 2026, and is shaping up to compete with a growing slate of video game adaptations, including Angry Birds Movie 3 and Mortal Kombat 2, alongside others.
