IBM CityOne game builds a smarter planet Summary: IBM's CityOne is a serious Sim City-like game that tries to show customers, partners, and students how smarter tech decisions can solve business, environmental, economic, and energy problems. By Andy Smith | October 27, 2010 -- 11:50 GMT (04:50 PDT) Previous | Next Image 4 of 8 They start small and build on top of innovations to make the city a greener, happier, more productive place. Topics: Mobility, IBM Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.