PCGame

Iron Lung

Short first-person horror navigating a blood ocean by instruments

David Szymanski · Released Mar 9, 2022

AdventureIndieSimulation

Reviews
Very Positive
92% of 11K
Recent reviews
Very Positive
89% of 88 in 30 days
Players
4
daily peak, Nov 7, 2026
Steam Deck
Playable
Last update on Steam
3 years ago
Oct 23, 2023
Minimum PC
Any made within the last …
0.2 GB disk
Full requirements

What is Iron Lung?

This short first-person horror game takes place entirely inside a sealed one-person submarine in a blood ocean on a barren moon, after the stars and habitable planets mysteriously vanish. You use an incomplete map, proximity sensors, sound, and an external camera to reach marked locations and photograph them.

For you if...

  • +you like horror built around suspense and uncertainty
  • +you enjoy navigating with limited visual information
  • +you prefer atmosphere over complex puzzles

Not for you if...

  • −you dislike slow, repetitive map-based navigation
  • −you want a clear view of your surroundings
  • −you expect a longer game with more varied mechanics

What players say

92% of 10,920 reviews are positive · 89% of 88 in the last 30 days

Players praise the tense atmosphere, sound design, and unusual premise, but many find the coordinate-based navigation slow and repetitive. Some also find the ending abrupt or disappointing.

Players over time

▼ -40% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 22 players on Oct 3, 2026.

Show the data
DayPlayers
Nov 7, 20264
Nov 6, 20265
Nov 5, 20267
Nov 4, 20268
Nov 3, 20269
Nov 2, 202610
Nov 1, 202618
Oct 31, 202610
Oct 30, 20266
Oct 29, 20267
Oct 28, 20265
Oct 27, 202619
Oct 26, 202612
Oct 25, 202612
Oct 24, 20269
Oct 23, 202613
Oct 22, 20267
Oct 21, 202610
Oct 20, 20268
Oct 18, 202617
Oct 17, 20269
Oct 16, 20268
Oct 15, 202614
Oct 14, 202618
Oct 13, 202622
Oct 11, 202619
Oct 10, 202615
Oct 9, 202615
Oct 8, 202614
Oct 7, 202616
Oct 6, 202612
Oct 4, 202615
Oct 3, 202622
Oct 2, 202615
Oct 1, 20268
Sep 30, 202610
Sep 29, 20267
Sep 27, 202611
Sep 26, 202610
Sep 25, 20266
Sep 24, 20267
Sep 23, 20261
Sep 23, 20267
Sep 22, 20262

How many players finish Iron Lung?

43% of Steam players have unlocked «Beyond the Veil», the achievement for finishing the main story.

Share of everyone who owns the game on Steam, including those who barely played it. Updated weekly.

Screenshots and trailer

Iron Lung screenshot 1

Iron Lung system requirements

Minimum: Any made within the last …, 0.2 GB of disk space.

As published by the developer.

Can my PC run Iron Lung?

Tell us your graphics card once and every game page will answer this for you.

Set up my PC →

Minimum

OS
Windows 7/8/9/10
Processor
Any made within the last decade
Graphics
Any made within the last decade
Memory
1 MB RAM
Storage
200 MB available space
Notes
You can run this

Recommended

Requires a 64-bit processor and operating system

Does Iron Lung have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does Iron Lung run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

  • Default controller config not fully functional
  • Sometimes shows mouse, keyboard or non-Deck controller icons
  • In-game text is legible on Steam Deck
  • Default graphics settings perform well on Steam Deck

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows
Achievements
7
Steam features
Cloud saves, Family Sharing, Trading cards
Languages
Full audio: English.

Does Iron Lung use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 25, 2026. How to filter AI games on Steam

Tags

Recent updates

1 DLC available.

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