Simulation Games

My daughter bought a game today called Mall Tycoon 2, where you design and run your own mall. It's not a bad little game, but helping her play it got me thinking about these sorts of games. They have become very sophisticated, and I think we need one that is environmentally focused. Why not create a game whereby you have to run the world economy in such a way as to reverse the threat of global warming, for example? This would be a great way of communicating this concept to people in a non-threatening way, and would make people realize that driving a car, eating a lot of red meat, etc all impact the environment negatively when done en masse.