Awesome
Game Design Documents
Doom
Source: http://mikaelsegedi.blogspot.com/2015/02/game-design-document-from-famous-games.html
Fallout: Brotherhood of Steel 2
Source: http://mikaelsegedi.blogspot.com/2015/02/game-design-document-from-famous-games.html
Grand Theft Auto
Source: http://mikaelsegedi.blogspot.com/2015/02/game-design-document-from-famous-games.html
Grim Fandango
Source: http://mikaelsegedi.blogspot.com/2015/02/game-design-document-from-famous-games.html
Narbacular Drop
narbacular_drop_technical_design_document.pdf
Source: http://mikaelsegedi.blogspot.com/2015/02/game-design-document-from-famous-games.html
Planescape: Torment
Torment_Vision_Statement_1997.pdf
Source: http://mikaelsegedi.blogspot.com/2015/02/game-design-document-from-famous-games.html
TRON
Design:
Misc:
Source: http://driph.com/words/2008/08/the-tron-design-documents/]