Brian Reynolds, the chief game designer who has worked at Zynga for four years, has resigned from his position at the company.
Speaking to Polygon, Zynga executive Steve Chiang says the company wishes Reynolds all the best.
"Brian has a long history in the game industry and has been a great partner to the creative leaders at Zynga," Chiang said.
"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.
"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."
Zynga has lost a handful of high-profile staff in recent months, including Words with Friends creators Paul and David Bettner, chief marketing and revenue officer Jeff Karp and infrastructure CTO Allan Leinwand, second-in-command John Schappert, chief creative officer Mike Verdu, CFO David Wehner, vice presidents Bill Mooney and Brian Birtwistle, and several others.