Zynga, the social games company just announced in a blog post. He starts next week.
"Going forward I'll continue in my role as Chairman and Chief Product Officer," said outgoing CEO Mark Pincus. "I'm excited to partner with Don and the rest of our team to return Zynga to its leadership role in inventing and growing Play as a core human experience."
Before his departure, Mattrick was the president of Microsoft's Interactive Entertainment Business, handling products such as the Xbox One. Prior to Microsoft he served as president of worldwide studios at Electronic Arts.
Leaping from the frying pan into the fire, Mattrick will now have to pick up the pieces of Zynga, which has struggled with departures and sweeping layoffs.