Cliffy B is ending his time with Epic Games.

One of the co-founders of Epic Games, Cliff Bleszinski most recently held the title of Design Director. He had been with the company for 20 years.

“I’ve been doing this since I was a teenager, and outside of my sabbatical last year, I have been going non-stop,” Bleszinski said in a letter to coworkers that has since been posted to the site. “I literally grew up in this business, as Mike [Capps] likes to say. And now that I’m grown up, it’s time for a much needed break.”

It’s unknown what he’ll do after his break. Epic only said that he plans “to chart the next stage of his career.”

“In 20 wonderful years with Epic, Cliff Bleszinski has grown into a true design luminary, and his contributions to the ‘Unreal’ and ‘Gears’ series have helped shape the game industry into what it is today,” said Epic technical director Tim Sweeney. “Cliff leaves Epic with our gratitude for his many contributions, and our wishes for continued success in the next chapter of his life!”