As said, I have been working on my first game design document for the past 6 months for a game I wanted to make over a year ago. I took a basic game design class over the summer and that prompted me to make a real GDD.
The game I'm working on is a simulation game with a fighting tank rather than a plane. Since there aren't many tank games that I can find these days, I didn't have something to base it off of. So I was loosely basing my game off of the Ace Combat series (my most favorate games), but all about tanks.
At the moment, I'm at 17 pages, primarily research, and I heard a typical GDD is well over a hundred.
Has anyone else tried something like this before? I could go with some tips over anything I have writer's block.