Sierra Entertainment

Sierra is a game developer and publisher. It was founded in 1979 as On-Line Systems. The company produced Hi-res Adventures for the Apple II.

Also known as Sierra On-Line.

Subject ID: 11199

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Sierra is a game developer and publisher. It was founded in 1979 as On-Line Systems. The company produced Hi-res Adventures for the Apple II.

Also known as Sierra On-Line.

In 2014, Sierra was relaunched by Activision Blizzard.

Subject ID: 11199

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