You (and/or your students) can explore these online games and then carry some of the knowledge and skills you’ve acquired into the world to engage with the Sustainable Development Goals:
#6 Water and sanitation
#11 Safe, resilient, inclusive and sustainable cities
From the UN/ISDR – the “STOP DISASTERS” game.
http://www.stopdisastersgame.org/en/playgame.html
From ABC Science – the  “CATCHMENT DETOX” game
http://www.abc.net.au/science/catchmentdetox/files/home.htm
And if you prefer hands-on SIMULATION GAMES for fun, interactive global learning, we have a great collection in the OWC Library.