Autodesk's online game called "Retrofits" helps educate the public about ways in which buildings can be made more efficient. Although it's not the SIMS, and Electronic Arts has nothing to fear, it's both educational and fun to play.

In building the game, Autodesk was able to apply first hand retrofitting experience. The company has improved the efficiency of its corporate offices by making various investments in energy efficiency, such as motion sensors, compact fluorescent lamps, improvements to physical plant, more efficient windows, etc... Check it out here.