According to Facebook’s recent analysis of most popular online games on the social networking website, smaller start-ups are being overshadowed by better-resourced and more established...
Cityville is Zynga's third game launch this year. Cityville is all about the users which requires them to build a whole city and then run it through communicating with their friends who are also playing the game.
Zynga had entered into a partnership with Yahoo way back in May 2010, and as a result of that Yahoo! has launched Mafia Wars and FarmVille on some of it's web properties.
Google has secretly invested in Social Gaming major - Zynga in order to power Google's own social games.