Don Mattrick has left Zynga, according to an announcement today from the company.

GamesIndustry.biz reports that with the departure of Mattrick. Zynga founder Mark Pincus is now serving again as CEO, at a token annual salary of $1. Mattrick oversaw Zynga during a period of continued losses of both money and players. Most recently, Zynga posted a $226 million loss, leading BTIG analyst Richard Greenfield to call for Mattrick's dismissal.

On the other hand, this was also a period of transition for Zynga, which had made its format primarily on Facebook. As Pincus noted in his statement, the company's bookings on mobile went from 27% when Mattrick joined, to more than 60% at the end of 2014. 

"When I joined the company in July 2013, Mark and I shared a vision of building a meaningful company that redefines entertainment in an increasingly mobile world," Mattrick stated. "I am proud of the progress we have made together. I believe the timing is now right for me to leave as CEO and let Mark lead the company into its next chapter given his passion for the founding vision and his ability to couple our mobile progress with Zynga's unique strengths. As a company, Zynga is in a stronger position today to serve mobile consumers and take advantage of the unprecedented growth opportunity across our industry. I am excited about the company's trajectory and wish the best for Mark, Zynga and NaturalMotion as I plan to return to Canada to pursue my next challenge."

Mattrick had originally been brought over from Microsoft, where he served as head of Xbox.