"Brian Reynolds has decided to move on and pursue other opportunities," an email sent to Zynga employees this afternoon reads.
Reynolds joined Zynga in 2009. His departure is the latest bad milestone consisting of financial issues, games closures and executive departures at the company.
Update: Zynga has released an official statement confirming the departure.
"Brian has a long history in the game industry and has been a great partner to the creative leaders at Zynga. I want to thank him for his leadership of the Zynga Baltimore studio in the design and development of FrontierVille, which brought many innovations to social gaming," said Zynga President of Games Steve Chiang. "We appreciate Brian's contribution and we're proud of the deep bench of creative leaders who are leading the next wave of game innovation at Zynga. We wish Brian the best in his next chapter."