URL: https://wiki.studiominus.nl/intro/fileStructure.html
Title: People Playground Modding - File Structure
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File Structure


    [ Game root folder ]
    
        Mods
        
            Some other mod
            ...
            Green brick mod
            ...
            No boys allowed mod
            ...
            Your mod
            
                mod.json
                thumb.png
                script.cs
            
        
    

The game looks for files called mod.json in a folder called "Mods" (case-sensitive). These are metadata files that contain information about the mod. They should (recommended, not required) be contained within a folder especially made for the mod. Metadata files tell the game basic information such as name, description, version, etc. It also tells the game where to look for its script files. Read more about them here.