Zynga's chief operations officer John Schappert has resigned, according to Fortune. This announcement comes just barely one week after Schappert's responsibilities at the developer were revised to no longer include the oversight of game development. Schappert's departure is effective immediately.

"John has made significant contributions to the games industry throughout his career and we appreciate all that he has done for Zynga," CEO Mark Pincus told Fortune. "John leaves as a friend of the company and we wish him all the best."

Prior to working at Zynga, Schappert served as Corporate Vice President of Live at Microsoft, as well as COO of Electronic Arts -- a company that happens to be suing Zynga as we speak.

This article was originally published on Joystiq.

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