i couldnt really figure out how to unrar it :/
First off, gotta get WinRAR if you don't have it: http://www.rarlab.com/download.htm
Once you've got it, or if you've already got it, just download the game and it'll come in a RAR archive. Put the archive where you want the game to be. Then you just right click the archive and click "extract here". That should be all you need to do, then you can play it.