One of the original, first person shooters turns 15 years old today. The video game Doom was released by ID Software in December of 1993 (a follow-up to Wolfenstein 3D). I don’t think I started playing Doom until the summer of 1994, when a friend (who had spent the time downloading it on a painfully slow 14.4 modem) gave me the pile of floppy disks to install the game. At the time, it was one of the best games out there, and had incredible graphics. We’ve definitely come a long way. Since ’93, Doom has been ported to just about every platform you can think of, including a recent flash version that you can play in your browser. What better way to wish Doom a happy birthday than by blowing up some aliens!