From your Upgrade 4 (mine is for the big bundle but yours could be for just one game) order page - click on the sharefile url   Pick the game you want (it is possible that if you just bought one game's upgrade that you will not see this page and go directly to the installers page):   That will show you the installers screen. You want the one that says full for whichever platform you like: That should take you to the screen where you can download the game: