There was a site, gamepitches.com, that wanted to archive these types of documents but it only existed for a few years. Here's a Wayback Machine link to the doc

There was a site, gamepitches.com, that wanted to archive these types of documents but it only existed for a few years. Here's a Wayback Machine link to the document archive: https://web.archive.org/web/20150406082704/http://www.gamepitches.com/game-designs/ https://web.archive.org/web/20150406082704/http://www.gamepi... Some classic design documentation is available for Karateka and Prince of Persia by the creator: http://www.jordanmechner.com/backstage/journals/ http://www.jordanmechner.com/backstage/journals/ Gamasutra postmortems are a good resource for modern games. They don't usually have design documents but they often talk about their plans and how they had to change during development: http://www.gamasutra.com/features/postmortem/ http://www.gamasutra.com/features/postmortem/