' Documents\Paradox Interactive\Hearts of Iron IV\mod\modname.mod'.įor manual installation or creation of mods, your project folder path should be something like this : The location of your project folder is defined in a mod file. The files in your project folder are read on top of the base game. Hoi4 mods have project folders, where configuration files are stored, in a simular way as the game is stored in its installation folder.