Iron Lung (2026)

No windows, ever. That’s the gimmick of Iron Lung, and it’s a brilliant horror idea that wears out long before the 125 minutes do. Markiplier writes, directs and stars as Simon, a convict steering a tiny sealed sub through a sea of blood on a lifeless moon, and the only way he can see outside is by snapping still photos. The first few snaps are terrifying. By the end you’d trade anything for a porthole. Most of the movie is one guy in a cramped metal box talking to a radio, and his delivery is so flat that one critic said he sounded like he was rehearsing. Still, the look is legit striking, all rust, red light and grainy images where something might be moving, and Andrew Hulshult’s score hums with dread. It made $50 million worldwide. A 4.2 because the atmosphere is real and the story sinks long before the sub does. $15.38 says you snap a blurry photo of a dark hallway tonight and zoom in way longer than you should.

What works: The look is genuinely eerie, from the rusty cabin to the grainy photos, and the score builds real dread.

What doesn’t: The pacing is painfully slow, and Markiplier’s flat, low-energy lead performance makes two hours alone with Simon feel even longer.

Who it’s for: Markiplier fans, players of the original game, and anyone who likes slow-burn cosmic horror more than jump scares.