Dear Settlers,
Welcome to Catan, a land of plentiful resources and perfect spaces. You’ve found the ideal place to settle and expand! But settling a land comes with certain challenges, and accommodating the needs and desires of your expanding population won’t be easy, on you or on the land itself. Developing villages and cities, roads to connect them, and armies to defend them, will all take a toll on the environment. Rapid development, and the destruction of the natural landscape will result in emission of greenhouse gases, which, should it go unchecked, will have potentially catastrophic effects. As settlers you have a choice, tackle global warming with sustainable development, or pursue individual victory, no matter what the cost...
—description from the publisher