Bungie is an American video game developer currently based in Washington State. The company was founded in May 1991 by University of Chicago undergraduate students Alex Seropian, who later brought in programmer Jason Jones. Originally based in Chicago, Illinois, the company concentrated primarily on Macintosh games during its early years, producing the popular Marathon and Myth series; a West Coast studio produced the video game console title Oni. Microsoft acquired Bungie in 2000, and their then-current project, first-person shooter Halo: Combat Evolved, was repurposed into a launch title for Microsoft's new Xbox game console. Halo went on to become the Xbox's "killer app", selling millions of copies and spawning a billion dollar franchise.