Okay, if you finished everything above, make sure the game is not open, if it is, close it and click on "Load" button. Inside the folder, there will be another folder called "assets", enter it; Ok, ...
Download this project’s Unity package. In your own Unity project, add the Readme by choosing “Assets” → “Import Package” → “Custom Package” from the Unity editor’s menus. First make sure the Readme is ...