Zynga moved its focus to developing and growing its mobile gaming business. As a result of these changes, Zynga lost a significant amount of its players, which marked the beginning of a long decline in Web gaming on Facebook. In May 2012, Facebook changed its homepage navigation to favor newly installed apps, making it difficult for players to find older games. Zynga went public in December 2011 and was one of the first companies to ring the bell at its own headquarters. Each day, Words With Friends sees more than 70 million words played. Over the next few years, Zynga developed Words With Friends into a forever franchise, and it became one of the most beloved social games of all time. In December 2010, Zynga acquired Newtoy and Words With Friends. Zynga was one of the fastest-growing consumer internet companies in Silicon Valley history, reaching $1 billion in annual bookings, 1 billion installs and 3,000 employees in just four years. Zynga grew its player network to 300 million monthly active users (MAUs) and at its peak on Facebook, represented an estimated 20% of Facebook page views and 19% of Facebook revenue in 2011. Some examples included: ‘animals that moved’ in FarmVille and new cities in Mafia Wars. Zynga grew its games through “Bold Beats,” – innovative new features that excite and ignite players by adding a new dimension of play. Five of these games surpassed $1 million per day in bookings, and Zynga became the most successful game developer on Facebook’s platform. CityVille, which reached 26 million daily users in 12 days, and according to VentureBeat became the fastest growing game in history. Zynga developed and launched many hit games on Facebook, including Mafia Wars, FarmVille, CityVille, FrontierVille, CastleVille, YoVille and Cafe World. Under the leadership of chief technical officer Cadir Lee, Zynga pioneered the use of big data and analytics to develop mass market consumer apps, which accelerated testing and development and drastically reduced time to market for games. Over its twelve year run the original FarmVille amassed over 700 million total installs. It launched on Jand became an immediate viral hit, reaching 1 million DAUs by the end of its first week, peaking at 32 million DAU. FarmVille, which would become the most popular social game at that time, was developed in just six weeks by a team of nine people.