I have completed the game development document(GDD). Thought through every aspect of the game. Every detail was covered. Because of my love to structure and plan, I wanted to make sure I am covered from every angle. Then I have read one book, then another. Received feedback. Played other games. New ideas came. Old ideas went. smashET GDD And now, the GDD now serves only as a reference guide. Is writing a GDD bad idea then? Not at all. I have to admit, I thought that it was a very bad idea. Why did I bother, spent days coming up with ideas, only to scrap them now? Yes, lots of ideas I initially had, have changed, improved, and the document comes useful now, only when I need a reminder of what my original thinking was. When new idea comes I amend my design, simple. Witcher 3  I was reading "Blood, sweat and Pixels" by Jason Schreier and during a chapter on Witcher 3 , the author mentions that the developers of that game were worried to make actions in the game ...