In the zip folder you downloaded, you should have a file named The Aftermath.exe, perform the double click ritual and the 64 deities of Windowsia shall manifest for your game to magically open.
I downloaded the game, I opened the downloaded file, I take the game out, and when I open the game it opens my desktop file. Is there a different way to open the game, cause it needs to be more simple than this. How do you open the game?