Extract the files bro..
Idk if you figured this out or not by now. The file is zipped when you download it. It genuinely looks like it has a zipper across it. just left click on the file and you should have an "Extract All..." option, press it. It'll produce a duplicate of the file that is unzipped which you can access and find the game file in. I'm not great at tech nor explanations but hope this helps even a little.