This has been quite a chapter! By now, you should have a better idea of how to analyze the structure of games and better predict their scope. We spoke at length about game content and your role in helping to define it. We've accustomed ourselves to the content treadmill (and how it can be avoided), and looked at the differences between games that rely on the content burn and those that aim to deliver a deep possibility space. We've also analyzed popular game structures and explored ways in which you can document the scope and plan of your work.
Armed with all this knowledge, we should be ready for the part you're anticipating (or dreading) the most. It's time to delve deep into the art and craft of writing design documentation!