Here's a use Microsoft undoubtedly did not have in mind for Excel - a spreadsheet that contains a fully-functional arcade game. I developed this just to see if it was really possible to put a game into a spreadsheet, but the end result is pretty cool. As Tetris games go, it is pretty basic, but it provides a good way of relaxing at the office if the boss won't let you download proper games! Excel users might even learn something from it!