Looking for Vitruvian man pictures, I stumbled across this page. Home page of a game made in Visual Basic. So I thought I'd give it a try. The demo isn't realy that interesting, but when I quit the game, I noticed the folder icon of the folder in which I installed the game was changed. I think it's a really cool effect and I was wondering how he did it. Two (invisible) files were created in the folder: gladfold.ico (which is the icon he used, a green folder) and desktop.ini. This is inside desktop.ini: