I have so many friends who work from the road or work from home now - virtual cities full of people that inhabit the ether, somehow getting their jobs done everyday. (creativeboom.com)
Thousands of species of bacteria have constructed virtual cities inside us, along with fungi and viruses — a world called the microbiome. (science.sciencemag.org)
The game became very popular with a lot of gamers due to its neat concept of allowing players to build and manage their own virtual city. (gamingenthusiast.net)