There is also Mobility (http://www.mobility-online.de/en/informations/generalinforma...). It was designed by a university and auto manufacturer so they put a bit more thought into their traffic algorithms. I feel it is a bit eurocentric because there are a lot of things they do in Europe which we do not do here as far as traffic management goes, but it is an interesting simulation/game to fool around with. Since the German federal government also played some role in its development, you will see more of a bureaucratic approach to the game.