Iron Lung

Iron Lung (2026) — watch online the sci-fi horror written and directed by Mark Fischbach, produced at Markiplier Studios. The stars are gone. No planets remain. Humanity clings to orbit, and every resource mission is a roll of the dice.

On a barren moon catalogued as AT-5, the Consolidation of Iron has found something no one wanted to find: an ocean of blood. A submarine is built — and a convict named Simon, played by Fischbach himself, is welded inside. The forward viewport is sealed with steel because the pressure at that depth leaves no other option. Survive and earn your freedom. This is expedition thirteen. The twelve before it never came back. Caroline Kaplan voices Ava over the radio, and Troy Baker plays the enigmatic David.

At 125 minutes, the film traps you in darkness alongside Simon — blind, descending, and increasingly certain something else is already down there. The tagline says it plainly: this is not an expedition. Stream Iron Lung (2026) online on iFILM.