Facebook has made some changes this week to the way it measures monthly and daily active users who use apps on the world’s largest social network. The company announced that it will no longer count users who land on an app without logging in. This changes - in some instances - more than halves the reported figures for some major games. While these changes don't change the actual traffic to Facebook apps, they do reflect active users more accurately.
Some games have been hit hard by the changes; Zynga's Adventure World's MAU plummeted by 58 percent from 39.4 million to 16.4 million. Despite the changes, Zynga still holds four of the top five games by MAU (according to data gathered by AppData.com) with Cityville in the top spot, followed by EA's Sims Social, then Zynga's other three games - Texas Hold 'em Poker, Farmville and Empires and Allies.
Prior to the changes, Cityville was reporting DAU of 13.5 million. That figure has dropped to 12 million. MAU numbers also dropped from around 76 million to just over 55 million. The Sims Social dropped from around 65 million MAU to about 42 million and from 9.5 million to just over 8.5 million DAU.
Zynga probably doesn't appreciate the change right now, given that the company is preparing for a major IPO for the NASDAQ stock exchange potentially worth billions of dollars.