TUTORIAL: Download the file at the end of the file you will see .rga or whatever. To extract it simply download Zarchiver https://play.google.com/store/apps/details?id=ru.zdevs.zarchiver when in Zarchiver press the file and choose extract. Once extracted go to Joiplay https://play.google.com/store/apps/details?id=cyou.joiplay.joiplay and press the + at the bottom. You will see something that says "Executable File" press choose and then find the file you extracted which should be named "main.html". That's it enjoy!