2K is an American video game publisher located in Novato, California. The company was started as part of Take-Two Interactive in January 2005 through the 2K Games and 2K Sports brands, after Take-Two Interactive bought Visual Concepts that same month. A third brand, 2K Play, was added in September 2007. Well-known game series include BioShock, Borderlands, Carnival Games, Mafia, NBA 2K, Sid Meier's Civilization, WWE 2K, and XCOM.