For some reason after installing the game I coundn't find the game .exe file anywhere. At first I thought it was an install bug or something but apparently the problem was that the .exe file was hidden so I had to meddle with the folder options a bit, make it appear and then set it as un-hidden.
There was this weird problem where the setup didn't work no matter what I did. Thankfully, the game worked just fine simply by copying the game's contents from the mounted mage.