Hey, this was cool. I heard the latest episode of the New Yorker Radio Hour (January 22nd) on the way home today. One segment was about an old Atari 2600 game, ‘Entombed’ (that I’d never heard of) that was one of the earliest examples of procedural generation. It was a neat little bit, you should give it a listen. It’s on their podcast, or you can find it on this page (the 3rd segment, at the bottom).