King Digital Entertainment plc, doing business as King, is a social games company. King develops games for the web, for mobile (iOS, Android, Windows Phone), Facebook, and Windows 10.King is led by Riccardo Zacconi, who has served in that role since co-founding the company in 2003. Gerhard Florin is the current Chairman of Board. He took over from Melvyn Morris when he stepped down in November 2014. The company has 1400 employees. In 2013, it spent $110.5 million on research and development, roughly 6 percent of sales. On 23 February 2016, King was acquired by Activision Blizzard for $5.9 billion.