I was feeling a bit nostalgic this weekend and re-watched Warren Spector's awesome GDC 17 presentation describing the development of Deus Ex. If you haven't seen it and have some spare time, check it out here. It has a truly fascinating lifecycle.

During the presentation, Warren alluded to a lot of pre-game development and backstory. That ultimately culminated in a 64-page game design doc that for nearly two decades was not released. Thanks to a dedicated fan-base on reddit (and gracious researchers/developers), those notes are now available. {Source }.

Just in case the original download link vaporizes, I'm uploading it here too: Majestic Revolutions - Joe Martin.pdf