The "Core" of a Game by Brenda Romero
A Feature Set from a “Core” by Brenda Romero
Creating a Game Design Document by Brenda Romero
Writing Great Design Documents by Damion Schubert
Effectively Organize Your Game's Development With a Game Design Document by Gamux
Creating A Great Design Document by Tzvi Freeman
One Page Designs by Stone Librande
A GDD Template for the Indie Developer by Jason Bakker
Nuff Said: Comics as Design Documents by Matthew Derby
A 4 Hour Story in 400 Simple Steps: Fallout DLC by Chris Avellone
Character Wrangling: Managing Large Casts with Documentation and Design by Leah Miller
Database of Design Documents
Database of Game Pitches