The Nexus Game gives participants a unique opportunity to get an insight into challenges of water management for energy and food production, at the same time sustaining environmental flows. The aim of the game is thus to provide an opportunity for practicing how different water management policies can lead to sustainable development of society in harmony with Nature. It can be used both as a training tool and a policy exercise. Participants strive to address water needs of population, industry, and agriculture, at the same time facing challenges of climate change. The game is designed to demonstrate many interconnected Water-Food-Energy Nexus challenges.