The tool will then extact all the files in the unitypackage file to your specified output folder. Add the path where you want the assets stored in the 'Output' textbox. Add the 'unitypackage' path to the 'File to extact' textbox (If you click 'Select' it will open a file select window automatically pointing to the default 'unitypackage' folder) So I made my own, which I'm sharing here if anyone else would find something like this useful: (The tools/script I found I couldn't get to work) I've recently started playing around with Unity and wanted to create an assets library but couldn't find a tool that would let me extract the assets from a.