Are you ready to feel old? Because it's the 20th Anniversary of Wolfenstein 3D and to celebrate this momentous occasion a free to play web version of the game is now available either on the Bethsoft website or on Facebook if that's more your speed. In addition you can grab Wolfenstein 3D Classic Platinum for the iOS device of your choice absolutely free for a limited time today so you can blow up robo-Hitler wherever you go!

If that's not enough why not check out this commentary walkthrough of the game by the one and only John Carmack, providing insight into the creation and development of this classic game while he plays it? Check out the video below. 

http://www.youtube.com/v/amDtAPHH-zE?version=3&hl=en_US