RockYou's senior vice president of games Jonathan Knight has left the company to join social rival Zynga.
"We hired [Knight] to help us build out a portfolio of great products and he's done the job," CEO Lisa Marino told Inside Social Games.
"We have built a strong team of talent through a careful hiring process, our Studio Partners program, and acquisitions over the past year. The departure of Jonathan will not impact our game development pipeline or our plans to continue to launch quality titles."
As well as acquisitions, Knight also helped launch the Studio Partners third-party publishing arm and signed two deals with John Romero's Loot Drop studio.