Treyarch is a video game development studio based in Santa Monica, California. Founded in 1996, it is best known for creating the popular Call of Duty series, particularly the Call of Duty: Black Ops sub-series. The studio has developed several titles and contributed to others, becoming a key player in the gaming industry. Treyarch is recognized for its innovative gameplay mechanics and engaging storytelling. The studio often collaborates with other developers, such as Infinity Ward and Sledgehammer Games, to produce annual releases in the Call of Duty franchise, helping to shape the first-person shooter genre.