Sierra Entertainment

Sierra Entertainment, Inc. (formerly Sierra On-Line) was a Worldwide American video game developer and publisher founded in 1979 as On-Line Systems by Ken and Roberta Williams. Based in Los Angeles, California, the company was last owned by a subsidiary of Activision Blizzard (a subsidiary of Vivendi SA) Sierra is best known today for its multiple lines of seminal graphic...
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Date founded:

  • 1979

Industry:

Also known as:

  • Sierra On-Line

Sierra Entertainment Headquarters

Los Angeles unknown
United States

Sierra Entertainment Headquarters

Culver City unknown
United States

Business

Parent company:

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Employees and other personnel:

Computer Games

Games Published:

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Games Developed:

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Games Designed:

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