Installing mods manually for Oxygen Not Included (ONI) is often necessary for players on the Epic Games Store or those using standalone versions who cannot access the Steam Workshop directly. 1. Locate Your Local Mods Folder
Use a trusted third-party Steam Workshop downloader service to fetch the .zip archive using that ID. 3. Extract and Format the Mod Folder
The final path should look like this: Documents\Klei\OxygenNotIncluded\mods\local\YourModName\ Step 4: Enable the Mod In-Game
A. Install ONI‑Modloader
: Click the checkbox next to the mod to enable it. oxygen not included how to install mods manually
: Documents\Klei\OxygenNotIncluded\mods\local\YourModName\mod.yaml . 4. Enable in Game Launch Oxygen Not Included . Select Mods from the main menu.
Bought the game from Epic, how do I install steam mods? : r/Oxygennotincluded
Download the compiled .zip archive (usually containing a .dll file and metadata). Avoid downloading the raw "Source Code" zip unless you intend to compile it yourself. Option B: Downloading from Steam Workshop Externally
(e.g., ModName.dll – this is the compiled code the game executes). Installing mods manually for Oxygen Not Included (ONI)
Locate the mod you want to install from a trusted third-party archive or a direct GitHub repository provided by the mod author. The download will typically arrive as a compressed archive, such as a .zip or .rar file. Step 2: Unzip and Structure the Folder Extract the contents of the downloaded .zip file.
Some GitHub mods are in "development" (pre-release). Look for a mod_info.yaml file inside the folder. If it's missing, the mod will not work.
If the game crashes before reaching the main menu, navigate back to ...\OxygenNotIncluded\mods\ and delete the mods.json file. This resets your mod load order and disables all mods so you can boot the game safely.
Type %USERPROFILE%\Documents\Klei\OxygenNotIncluded\mods\local\ and press . you must create it manually.
Depending on your operating system, navigate to the following paths: 🏙️ Windows Press Windows Key + R to open the Run dialog box.
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/Users/[USERNAME]/Library/Application Support/unity.Klei.Oxygen Not Included/mods/Local/ ~/.config/unity3d/Klei/Oxygen Not Included/mods/Local/ folder does not exist within the directory, you must create it manually. 2. Prepare the Mod Files When you download a mod manually (from sources like Steam Workshop downloader ), it usually arrives as a Klei Entertainment Forums Extract the Zip