Rens Kortmann is a games developer and environment researcher at CE Delft. He received his PhD in Artificial Intelligence from Universiteit Maastricht in 2003. His work translates the factual science of environmental economy and technology into stimulating, comprehensive policy simulations and Serious Games. Whilst playing games, traditional opponents commonly drop their arms - thus promoting an open dialogue on pressing issues including global climate change. Building realistic, but safe, playing grounds enables experts and laymen alike to explore environmental challenges and the opportunities to tackle them.