"In its short history, Zynga has redefined entertainment and brought social gaming to the mainstream. More than 1 billion people across web and mobile have installed Zynga games, and franchises like FarmVille and Words With Friends have become a part of people's daily lives," said Mattrick. "I joined Zynga because I believe that Mark's pioneering vision and mission to connect the world through games is just getting started. Zynga is a great business that has yet to realize its full potential. I'm proud to partner with Mark to deliver high-quality, fun, social games wherever people want to play."Mattrick, 49, spent six years at Microsoft – the last three as president of the Interactive Entertainment Business. In that role, he was responsible for the team that grew Microsoft's Xbox 360 global installed base by 700 percent to more than 75 million consoles. During his six-year tenure at Microsoft, Mattrick also oversaw businesses and services focused on consumer products that included the groundbreaking Kinect entertainment products and PC and mobile interactive entertainment. Mattrick served as the president of Worldwide Studios at Electronic Arts. During his 15-year career at Electronic Arts, Mattrick helped develop and scale the company's leading global game franchises and brands including "Need for Speed," "FIFA" and "The Sims." At age 17, Mattrick founded his first company, Distinctive Software, which was acquired by Electronic Arts in 1991. "Mark took the lead in working with the entire board to recruit Don to Zynga," said John Doerr, Member of the Zynga Board of Directors and General Partner at Kleiner Perkins Caufield & Byers. "All of us at Zynga – and no one more than Mark – are thrilled Don is joining our mission to connect the world through games. This is a win for the people who play our games, the talented employees who make them and the investors who believe in our long-term value. This also is a win for Mark, who can devote his full attention to conceiving and building the best social games in the world."