Sierra Entertainment

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Sierra Entertainment, Inc. is an American video-game developer and publisher founded in 1979 as On-Line Systems by Ken and Roberta Williams. Based in Oakhurst, California and later in Fresno, California, the company is owned by Activision, a subsidiary of Activision Blizzard.

(Source: Wikipedia)

Creative work published:

Work titlesort descending Author Year Appears in
Gabriel Knight Jane Jensen 1993
Half-Life 1998
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Eivind Farestveit