City of Wonder is or was a web browser game, produced by Playdom, available to all members of Facebook (launched on about 17 August 2010). Much of it is based on the Civilization series but there are elements of Travian and other games, as well as gifting and other features that make use of a player's "friendships", features found in many Facebook games.
- Application home page on Facebook - not found by Yahoo in August 2017
- Forums - not found by Yahoo in August 2017
- Playdom launches website ... - review in 2012 saying " ... Playdom has been successful making social games such as Social City, and City of Wonder on Facebook. Now the company has given some of its social games their own website. ... The new City of Wonder website is quite different from the way you are used to playing this game on Facebook. ..."
- City of Wonder Wiki - a Fandom/Wikia site, last edited (before 2017) in September 2013