After you extract the file, you should see the Index.html file (There are three folders. media, Lib and fonts and a file named Index.html). Your browser will open the game. Assuming you're on windows/linux, I recommend you firefox or chrome.
On Android... it's a bit more complicated but yes, it can run. In order to do so you need the rar app (or any app that can unzip files) and joiplay (both of them are on the play store). After you download the .zip file from here, open it and unzip it. Please note the directory where you unzip them. Then, open the joiplay app, push the "+" symbol and find the game's folder, and open the .html. There are more detailed instructions on the "Download and install instructions" section when you download the .zip file here