Don't use multiple versions of the same mod at a time,
such as the SteamWorkshop version and a manually
installed one.
Download the mod in one of two ways.
-
Click on
Releasesin the right
sidebar and choose the archive.
-
Download the ZIP archive with
Code ➞ Download ZIP
Navigate to the local folder,
create it if it doesn't already exist.
%USERPROFILE%\Documents\Klei\OxygenNotIncluded\mods\local
~/.config/unity3d/Klei/Oxygen Not Included/mods/Local
~/Library/Application Support/unity.Klei.Oxygen Not Included/mods/Local
Place the extracted ZIP archive in it.