Zynga dominates Top 25 Facebook Social Games for December
Outside of the top ten there is a smattering of games from other developers, including Mobsters 2, Bejeweled Blitz, and Country Story. Perhaps most interesting is the massive growth of total users between 2008 and 2009. The highest game in 2008, Lil' Green Patch, had 6 million users. All but the bottom five games in the top 25 for 2009 exceed that number, with Farmville actually getting more than that in new users between November and December.
[via Inside Social Games]