War Clouds is a conflict-focused expansion for that macroeconomic model in a game-box, Wealth of Nations. With War Clouds, players can now build military units, fortify their borders, and attack their neighbors. A new Integrated Economy tile allows the combination of farm and generator industries for more efficient production of food and energy.

Also just released by Tablestar Games is the smaller Super-Industry Tiles expansion, which includes the aforementioned Integrated Economy tile, as well as a Financial Center tile (for bigger banks), and War Economy tile (for linking academies and generators).