Euro-style game of managing climate change. Using a combination of blind-bidding, trading, investment and insurance, players manage the development of cities while jointly dealing with CO2 emissions. Each player has to develop his region of the World, but the players also have to take care that the Earth is not heated up too much by CO2 emissions. The game can only be won if players collectively succeed in limiting and finally reducing the global warming. The winner is then the player who has developed the largest sustainable economic potential.