City as a Playable Unit Anton Nijholt： Playable Cities： The City as a Digital Playground, Springer, Singapore, 2017, ~ 95.19, ISBN： 978-981-10-1962-3

The world＇s population is becoming increasingly urbanized, and some argue that advancement of technology along with the commercialization of cities has become a hurdle for interaction of city dwellers with each other and the city itself. In Playable Cities, edited by Anton Nijholt, several researchers pose ideas for ＂smart cities＂-- developing current metropolitan hubs to allow citizens to ＂playfully connect with [their] environments, and with one another, by way of environments.＂ This involves utilizing underused public data sources and technology so that citizens can have a more active role in the advancement of their city.