CityVille 2 especially stands out since the game launched a few short months ago and lead designer Brian Reynolds announced he was leaving the social game giant in January.
In the company's 2012 financial statement, Zynga posted a loss of $209.4 million.
On a positive note, Zynga said FarmVille 2 is exceeding expectations by 100% last quarter and generating $100 million in gross bookings since launch.
Zynga admitted to analysts that FarmVille 2 may have cannibalized some of CityVille 2's attention, having launched a month before CityVille's sequel. The company said that in the future it will make sure to have fewer titles in general, and leave more space between planned game launches. Zynga is also excited about upcoming mobile and "midcore" titles (defined as "hardcore" games that can be played for only a few minutes at a time), and CEO Mark Pincus says 2013 will be a "pivotal year" for Zynga, with a goal to "make it easier and better to play across mobile and social."