Game Design Documents

A game design document (GDD) is considered required for the creation of any game. It provides guidance to the whole team working on it and outlines the key points: the plot, characters, core concepts, game mechanics, and theme.

GameDesigning.org has an article for writing your own GDD.

Examples

• Diablo
• Grand Theft Auto
• Mass Flux
  • This was a GDD provided as an example from Pirate Software’s develop.games site