Rockstar Toronto is a Canadian video game developer and a studio of Rockstar Games based in Oakville, Ontario. The company was established as Imagexcel in the early 1980s and developed more than fifteen games, including Quarantine, until 1995. Quarantine's publisher, GameTek, bought the studio's assets in March 1995 to establish Alternative Reality Technologies. Take-Two Interactive acquired the studio in July 1997 and moved it to its Rockstar Games label as Rockstar Canada in 1999. Rockstar Canada subsequently developed Grand Theft Auto: London 1969, an expansion pack for Grand Theft Auto, as well as several ports for Rockstar Games. With Take-Two's acquisition of Rockstar Vancouver in 2002, Rockstar Canada was renamed Rockstar Toronto. The studio developed the 2005 game The Warriors, based on the 1979 film of the same name, and further ports, including the Windows versions of Grand Theft Auto IV, Grand Theft Auto: Episodes from Liberty City, Max Payne 3, and Grand Theft Auto V. In July 2012, Rockstar Toronto absorbed Rockstar Vancouver.