Did you unzip the file first? It should go into a new folder, then you'll see a file called "realistair.exe." That's the game.
Yes I did that, also after I kept on trying to open the game I think it said something like, this game will not work on this device. So I think that at the very beginning it would not work for me and the device which I am using is a Chrose 0S. Can you please try to find out if the game will work for my device or not? If you can't then I appreciate all your help! Thanks!