Hi guys! I had a same probel as you guys. I fixed it, when I downloaded and application called "7-Zip". Download the app normally even though it is textfile and then when you open game file, open it as a other app -> pick 7-zip. After doing these steps, you are able to extract the file normally. If you didn't understand anything of my yapping, watch this tutorial that helped me:
I hope you will also be able to play this masterpiece :)