John Romero posted this video today to Vimeo in celebration of the 25th anniversary of Commander Keen. it’s the first publicly available footage of the Super Mario Bros. 3 demo that id software pitched to Nintendo. You might have heard about it from the David Kushner’s Masters of Doom book (Amazon, iBooks, Wikipedia) which is well worth reading if you haven’t already.
If you read Masters of Doom and were left wondering what the feel of that office was really like, this video is perfect. It really does id’s history better justice than at least my imagination could.
If you haven’t read Masters of Doom yet, please give it a try. It is one of the most engaging books I have ever read, and is probably tolerable even if you can’t stand the usual gamer-yakkity-yak.