
Modrinth · Minecraft mod
Thin Air
The air is not always breathable in the depths of the earth and other dimensions.
Quick answer
Which Thin Air release matches 1.20.1 Forge?
Thin Air v8.1.7-1.20.1-Forge targets 1.20.1 with Forge. Installation on the client is optional. Installation on the dedicated server is optional. All 1 required mods have matching files.
Where it goes
Is Thin Air required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does Thin Air v8.1.7-1.20.1-Forge need?
v8.1.7-1.20.1-Forge on 1.20.1 Forge. Every mod below is checked against that same setup.
Install Puzzles Lib first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Thin Air without breaking your instance.
Built for Thin Air v8.1.7-1.20.1-Forge on 1.20.1 Forge. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use v8.1.7-1.20.1-Forge. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Puzzles Lib first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside v8.1.7-1.20.1-Forge. It opens that exact file at the source.
About this project
What does Thin Air add?

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Thin Air introduces hardcore air mechanics, making it harder and harder to breath the further you move away from the world's sea level. Both adventuring in caves as well as climbing tall moutains have suddently become quite dangerous if you don't bring a sufficient air supply! And don't even think of travelling to the Nether...
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▶️ Below Y=0 and above Y=128, and in the Nether, you slowly lose air
▶️ In the End, there's no air at all
▶️ You can protect yourself with Potions of Free Breathing (which were renamed from Water Breathing), or with Respirators and Air Bladders
▶️ Create little pockets of tepid safety for yourself with Soul Fire, Soul Torches, or Soul Campfires. Or, restore your lungs with a Bottle of Soulfire
▶️ Safety Lanterns change color in your inventory and in the world to tell you the air quality around you. Or dye them for decoration!
▶️ Drowned will choke the air out of you on attacking
▶️ And as a fun bonus, right-click a torch to make it spew particles, perhaps to signal the exit to a cave
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⏩ INSTALLATION REQUIRED ON CLIENT & REQUIRED ON SERVER
⏩ REQUIRES PUZZLES LIB TO BE INSTALLED (FABRIC & NEOFORGE)
⏩ REQUIRES FABRIC API TO BE INSTALLED (FABRIC)
⏩ REQUIRES FORGE CONFIG API PORT TO BE INSTALLED (FABRIC)
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If available for a mod, configuration is possible directly from in-game using the mod menu (requires Mod Menu by Prospector to be installed on Fabric). Please note that on older Minecraft versions installing Forge Config Screens is also a requirement.
For manual configuration using an external text editor all files are found at .minecraft/config, named as MOD_ID-client.toml, MOD_ID-common.toml, or MOD_ID-server.toml, depending on the type of config. Not all types might exist for a mod, if any at all.
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🌟 Thanks a lot to Petra for originally creating this mod as Miner's Lung. Thin Air is a simple port of the original project to modern Minecraft versions.
🌟 Thanks a lot to AlphaMode for porting Miner's Lung to Minecraft 1.19.2, providing the basis for Thin Air.
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Project description from Modrinth.
Pick your setup
Thin Air by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.4
3 loader builds1.20.1
2 loader builds1.19.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Thin Air versions and loaders
v8.1.7-1.20.1-Forge
ThinAir-v8.1.7-1.20.1-Forge.jar
17 Jul 2025
v8.1.6-1.20.1-Forge
ThinAir-v8.1.6-1.20.1-Forge.jar
7 Jul 2025
v8.1.5-1.20.1-Forge
ThinAir-v8.1.5-1.20.1-Forge.jar
29 Jan 2024
v8.1.3-1.20.1-Forge
ThinAir-v8.1.3-1.20.1-Forge.jar
24 Jan 2024
v8.1.3-1.20.1-Forge
ThinAir-v8.1.3-1.20.1-Forge.jar
7 Nov 2023
v8.1.2-1.20.1-Forge
ThinAir-v8.1.2-1.20.1-Forge.jar
6 Nov 2023
v8.1.1-1.20.1-Forge
ThinAir-v8.1.1-1.20.1-Forge.jar
6 Nov 2023
v8.1.0-1.20.1-Forge
ThinAir-v8.1.0-1.20.1-Forge.jar
5 Nov 2023
v8.0.0-1.20.1-Forge
ThinAir-v8.0.0-1.20.1-Forge.jar
27 Jun 2023
Looking for an older file? The official Modrinth project page is in Resources.



