SierraVision
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Formerly called
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| Subsidiary | |
| Industry | Video game industry |
| Fate | Dissolved by parent, "Sierra" brand name revived in 2014. |
| Founded | 1979 in Oakhurst, California, U.S. |
| Founders | |
| Defunct | 2008 |
| Headquarters | Bellevue, Washington, U.S. |
| Products | List of Sierra Entertainment video games |
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| Website | sierra |
Sierra Entertainment, Inc. (formerly On-Line Systems and later Sierra On-Line, Inc.) was an American video game developer and publisher based in Bellevue, Washington.
Founded in 1979 as On-Line Systems, by Ken and Roberta Williams. The company was acquired by CUC International in July 1996, and sub-organized under its CUC Software subsidiary in September 1996. CUC Software later was renamed to Cendant Software in 1997, and Cendant Software was then acquired by Havas Interactive (later renamed Vivendi Universal Games and Vivendi Games) in December 1998.
In 2008, Vivendi Games was acquired by and merged with Activision, and Sierra Entertainment was dissolved shortly thereafter.
The "Sierra" brand name was relaunched by Activision in 2014, and exists as a publishing label under which Sierra's legacy titles are re-released, as well as some independent titles.
Sierra Entertainment was founded in 1979 as On-Line Systems in Simi Valley, California, by Ken and Roberta Williams. Ken Williams, a programmer for IBM, bought an Apple II microcomputer which he planned to use to develop a Fortran compiler for the Apple II. At the time, his wife Roberta Williams was playing text adventure games on the Apple II. Dissatisfied with the text-only format, she realized that the graphics display capability of the Apple II could enhance the adventure gaming experience. After initial success, On-Line Systems was renamed Sierra On-Line in 1982, and the company moved to Oakhurst, California. By early 1984 InfoWorld estimated that Sierra was the world's 12th-largest microcomputer-software company, with $12.5 million in 1983 sales.
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