Cliff Bleszinski has announced he is leaving Epic Games, the company he has worked at for 20 years.

While at Epic, Bleszinski helped design titles ranging from Jazz Jackrabbit to Gears of War and became one of the most well-known developers in the industry as the face of the company.

“I’ve been doing this since I was a teenager, and outside of my sabbatical last year, I have been going non-stop,” reads a note from Bleszinski to his colleagues posted to Epic’s website. “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.”

Neither Epic nor Bleszinski said what the next step will be for him, referring only to his plan “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,” says Epic CEO Tim Sweeney in the same post. “Cliff leaves Epic with our gratitude for his many contributions, and our wishes for continued success in the next chapter of his life!”

Epic Games is currently co-developing Gears of War: Judgement with People Can Fly as well as working on Fortnite.

The studio was first founded in 1991 and has since become one of the most influential developers in the industry, not only with the games they create, but with the creation of the Unreal Engine that it licenses out to other developers.