Glen Schofield, one of the co-founders of Sledgehammer Games, has announced his plans to leave Activision at the end of the year. Schofield made the announcement via Twitter citing it was “time to try something new” before thanking the company.

I’ve had a great run here at Activision; 3 COD’s- MW3, AW and WWll- that I’m proud of. I feel it’s time to try something new tho. I’ll be leaving Activision end of Dec. and taking some time off to relax. Then off to something else exciting.
Thank u Activision for everything!

— Glen A. Schofield (@GlenSchofield) December 10, 2018

In an interview with Gamespot after making his announcement, Schofield stated that it was time for a change after working on the Call of Duty franchise for nine years. He signed off saying he’d take his time on deciding what’s next, but stated that he still had “a couple good games” left in him.

Schofield founded Sledgehammer Games in 2009 alongside Michael Condrey, and shortly after was purchased by Activsion. Under the duo, the studio would go on to produce three installments of Activision’s massive Call of Duty franchise. The studio helped develop Call of Duty: Modern Warfare 3 with Infinity Ward before branching out on their own for 2014’s Call of Duty: Advanced Warfare and 2017’s Call of Duty: WWII. Back in February of this year, however, both Schofield and Condrey left Sledgehammer Games to pursue internal roles at Activision. Schofield was cited saying he was “exploring new game ideas for the company” in his new role.

Prior to founding Sledgehammer, Schofield worked at Electronic Arts serving as the general manager of the now defunct Visceral Games. At Visceral, Schofield helped the studio create the sci-fi horror franchise Dead Space. It is unknown what Schofield plans to do next, but he does promise it will be “something else exciting.”