PlayReal is a massive multiplayer online and offline game (MMOOG). The first of its kind, and with just as unique a goal. To help create solutions for a sustainable planet.
How? By helping young gamers think in that direction while using their typical digital skills. And then translate that to the outside world. By doing so on a global scale we aim for the new generations to come up with new solutions. Both online and offline.
G. Christou, P. Zaphiris, C. Ang, and E. Law. CHI '11 Extended Abstracts on Human Factors in Computing Systems, page 879--882. New York, NY, USA, ACM, (2011)