Blizzard North (formerly known as Condor) was an American video game development studio based in San Mateo, California. The studio was the Bay Area division of Blizzard Entertainment, known for its Diablo series. The company was originally based in Redwood City, California, before moving a short distance away to San Mateo, with Blizzard proper being based in Irvine, southern California.

https://en.wikipedia.org/wiki/Blizzard_North