It's in my sig, but I figured I'd post about it here, too.
I've got a development project I'm working on that's a world generator/simulator. It would be hard to compare it directly to anything. It has elements of SimEarth, Civilization, SimCity, Crusader Kings, Populous, and other games. It's not a "game" in the sense that you have a goal. It's more of a "software toy" or a sandbox.
Anyway, I am posting about its development here: http://sagasim.gorzek.com
I absolutely welcome comments, questions, and suggestions on this project. Love to know what you guys think.