About the Game
Iron Lung is a short dread-driven submarine horror game from the developer of DUSK, The Moon Sliver, and Squirrel Stapler.

There is only a single porthole on the sub, and it needs to be closed due to depth pressure, so you have to navigate purely via an incomplete map, proximity sensors, sound, and a primitive external camera which can be used to take the pictures you need to complete your mission, or to get a grainy low resolution visual of what's happening outside.
Success will require resourcefulness and patience.

Then, a mysterious anomaly known as a Blood Ocean (which is exactly what it sounds like) was discovered on an otherwise barren moon. It's not the first Blood Ocean found since the vanishing, but initial scans show a collection of potentially useful anomalous locations in a deep undersea (underblood?) trench that require further investigation.
And you're the unlucky sap who gets to investigate, in an aging submarine cobbled together from rusty space station parts.
Find your way to the marked locations, photograph whatever you find there, and try to finish before the sub collapses around you... or you're discovered by whatever lurks in the blood...
FEATURES
- Experimental minimalist gameplay, where your senses are limited and anything could be lurking around you
- Glimpse your surroundings through the lens of a grainy still camera and navigate using an incomplete satellite map and proximity sensors
- Horror based around building dread and paranoia
- Original soundtrack inspired by the work of Aubrey Hodges (Doom 64)
- A short experience intended to be finished in under an hour

THE GAMEPLAY
Set entirely within a claustrophobic one-man submarine nicknamed the "Iron Lung," you must blindly navigate an ocean of blood to take photographs of key locations, and hope whatever lives below doesn't find you.There is only a single porthole on the sub, and it needs to be closed due to depth pressure, so you have to navigate purely via an incomplete map, proximity sensors, sound, and a primitive external camera which can be used to take the pictures you need to complete your mission, or to get a grainy low resolution visual of what's happening outside.
Success will require resourcefulness and patience.

THE STORY
Decades ago, every known star and habitable planet mysteriously vanished, along with whatever and whoever happened to be on them, leaving behind an empty universe of asteroids and lifeless moons where the only remnants of humanity are those who were on space stations or starships at the time. With supplies gradually dwindling and infrastructure falling into disrepair, the survivors have spent the subsequent years frantically searching for any trace of remaining natural resources. Up until now they have been unsuccessful...Then, a mysterious anomaly known as a Blood Ocean (which is exactly what it sounds like) was discovered on an otherwise barren moon. It's not the first Blood Ocean found since the vanishing, but initial scans show a collection of potentially useful anomalous locations in a deep undersea (underblood?) trench that require further investigation.
And you're the unlucky sap who gets to investigate, in an aging submarine cobbled together from rusty space station parts.
Find your way to the marked locations, photograph whatever you find there, and try to finish before the sub collapses around you... or you're discovered by whatever lurks in the blood...
Screenshots
6 images
Version Information
Steam Patch Notes
Official update history
On the site: Build 12439138
Up to date
The next update (which adds some fun cheats to the game) is currently on the beta branch for testing, if anyone is interested. For more information and patch notes see the readme file and cheats.txt
View on Steam
Version 2.2
Mar 16, 2023
Version 2.2
- Improved controller support. Game can now be played from beginning to end with a controller, although the computer terminal still requires a keyboard.
Updated the soundtrack DLC to have proper metadata and the album cover ːileyeː
View on Steam
Version 1.2
May 26, 2022
The upcoming 2.0 patch for Iron Lung is now on the beta branch, for anyone who wishes to help test it. I expect to release it for realsies in a few weeks, if you wanna wait, but if you're eager to see the changes now or grab the achievements before anyone else, well... go nuts!
Note that OLD SAVES WILL NOT WORK. This is for stupid but unavoidable reasons. When this releases officially I'll provide a version 1.2 branch for a few weeks that players can opt into if the update happens right in the middle of their playthrough and they want to continue with their existing save.
The final update will also have trading cards and points shop items, but they're still being worked on.
Changes:
- Steam Achievements!
- Added computer terminal to the inside of the Iron Lung, where various documents can be queried. This isn't really a "lore bible." It just gives more background to your situation and the overall universe.
- Added something new to find in the world.
Achievements are all hidden right now because they aren't live on the main branch, but here's a list if you wanna try getting them:
- Finish the game
- Read what the last person left
- Photograph the complete skeleton
- Photograph the anomaly
- Crash into a wall
-
-
And of course if you encounter any issues, please report them on the forum (and specify that you're testing the beta branch)
Thanks!
-David
View on Steam
Note that OLD SAVES WILL NOT WORK. This is for stupid but unavoidable reasons. When this releases officially I'll provide a version 1.2 branch for a few weeks that players can opt into if the update happens right in the middle of their playthrough and they want to continue with their existing save.
The final update will also have trading cards and points shop items, but they're still being worked on.
Changes:
- Steam Achievements!
- Added computer terminal to the inside of the Iron Lung, where various documents can be queried. This isn't really a "lore bible." It just gives more background to your situation and the overall universe.
- Added something new to find in the world.
Achievements are all hidden right now because they aren't live on the main branch, but here's a list if you wanna try getting them:
- Finish the game
- Read what the last person left
- Photograph the complete skeleton
- Photograph the anomaly
- Crash into a wall
-
-
And of course if you encounter any issues, please report them on the forum (and specify that you're testing the beta branch)
Thanks!
-David
I'm currently working on implementing achievements for an update, and even though I've done this before and should KNOW how to do it right, I accidentally set them live for everyone to see, even though it's not possible to unlock them in the current version of the game.
The achievement update should be coming soon so you don't have to wait too long, but I just wanted to let everyone know that even though you can see a list of achievements, you can't actually unlock any of them yet. Sorry for the confusion. In my defense the Steam backend is some eldritch crap a lot of the time lol
View on Steam
The achievement update should be coming soon so you don't have to wait too long, but I just wanted to let everyone know that even though you can see a list of achievements, you can't actually unlock any of them yet. Sorry for the confusion. In my defense the Steam backend is some eldritch crap a lot of the time lol
I've added a beta branch to Iron Lung (called, appropriately enough, "beta"). The purpose will be for testing patches before I release them, to make sure I didn't screw something up.
If you'd like to help test Iron Lung, or if you just want to see what new stuff is coming, you can opt in to the beta branch by right clicking on the game in your library, selecting "properties," choosing the "betas" tab, and selecting "beta" from the dropdown list.
Currently patch 1.2 is on the beta branch, which includes fixes for two of the game's biggest bugs (the loading softlock and incorrect resolution defaults for some players), as well as some new behind the scenes shots in the goodies folder. Refer to readme.txt for more info.
If you encounter any issues please report them on the forums, and make sure to specify what version you've been playing.
Thanks!
- David
View on Steam
If you'd like to help test Iron Lung, or if you just want to see what new stuff is coming, you can opt in to the beta branch by right clicking on the game in your library, selecting "properties," choosing the "betas" tab, and selecting "beta" from the dropdown list.
Currently patch 1.2 is on the beta branch, which includes fixes for two of the game's biggest bugs (the loading softlock and incorrect resolution defaults for some players), as well as some new behind the scenes shots in the goodies folder. Refer to readme.txt for more info.
If you encounter any issues please report them on the forums, and make sure to specify what version you've been playing.
Thanks!
- David
Current Release
Build 12439138
Uploaded Feb 02, 2026
System Requirements
OS
N/A
CPU
Any made within the last decade
RAM
1 MB RAM
GPU
Any made within the last decade
How to Install
1
Download all files
2
Extract the .RAR file to a folder (use WinRAR or 7-Zip)
3
Run Iron Lung.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
Size
150 MB
Build
12439138
Password: cracked-games.org
CRC32
85C61D75
SHA-256
c7fda5307a76b07c3948c51dde1c281fbc8d1ba0df7d72a1e7b948872eeffabd
How: Right-click the downloaded file → 7-Zip / WinRAR → CRC SHA → compare with the values above.
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View AllDownload Iron Lung for PC with a direct link or via torrent. Get the full version of Iron Lung for free. Iron Lung is a Adventure released by David Szymanski.