To manually install mods for (ONI), you must place the mod files into a specific "local" folder within your game data directory . This process is the same whether you use the Steam or Epic Games Store version of the game. 1. Locate the Manual Mod Folder
The directory for manual installation varies by operating system. Navigate to the following path: \Documents\Klei\OxygenNotIncluded\mods\ oxygen not included how to install mods manually