Sony said:

PS4 software sales remained strong through the holiday season with more than 9.7 million* copies sold in retail stores worldwide and through digital downloads on PlayStation®Store. A few of the top selling games included Call of Duty®: Ghosts from Activision, Assassin's Creed®IV Black Flag from Ubisoft, Battlefield 4 and FIFA 14 from Electronic Arts Inc., and Killzone Shadow Fall from Sony Computer Entertainment Worldwide Studios (SCE WWS).



Many PS4 owners have quickly taken advantage of the features and benefits of the PlayStation®Plus (PS Plus) membership service. Global PS Plus subscriptions have increased by more than 90% since the PS4 launch*3. PS Plus members have access to the Instant Game Collection and can play the full versions of popular titles without a time limit and at no extra cost. Current games include Resogun from Sony Computer Entertainment Worldwide Studios (SCE WWS) and Contrast from Compulsion Games*4*5, followed by additional exciting titles in 2014.



*Number of retail sales to consumers is estimated by SCEI. PS4 Software sales data in Europe and Asia collected 11/29/13  12/31/2013. PS4 Software sales data in North America and Latin America collected 11/15/13  12/28/2013 (some data collected 11/15/13  12/31/2013).