Well I have started a book for Nook. I have finished the Geography for the little world map included. Each locale got a short paragraph and I tried to add something of interest about it. I have some vague history started and some of it is present in the geography section. I want to expand that some. Then I want to add a few important, famous, or interesting personalities to it.
I also have started some Dice Chucker rules variants for Nook, after that I think I should be done with it.
As a whole the world does not really stand out and say, "Hey play me I am unique and intresting" I and a few others may use it but that is it. But the method I a developing for smaller worlds is the real prize for me. By limiting myself and my scope I can create a fully functional world in less than a month. Considering I have well over a dozen project worlds this could really be an asset to me. I full intend on going back to some of my more intresting worlds and seriously cut some fat, as well the ideas I have that are little more than a few scribbles on paper will get done.
The possible advantage to this method.
By doing this, a great deal of the detail in your worlds can be constructed (or even altered, which undoubtedly, will happen) in-game. Through the gm-player interactions involved, I believe that you have the opportunity for creating engrossing environments, as opposed to creating the details in a forced or arbitrary fashion.
When I had first started working on Nevercast about ten years ago, I gathered a group of online friends to play it with me over the old Webrpg platform. Only a fraction of the game was actually completed; neither the rules nor the worlds were realized. So, we had this game where the environments and rules would be made up on the spot! I'm pretty sure the constant mechanical changes pissed off my players, but there were so many gaps that I couldn't have possibility noticed while working in a static atmosphere. If an idea sucked in-game, I tossed it. I would also like to add that this is also how I derived many vivid and emotionally-charged NPCs to color the setting with.
Over time, you will pass a creative event horizon where you'll be able to build upon your setting in a static atmosphere, without compromising its integrity, because you've already developed a strong foundation.