Private company

Sierra On-Line

Sierra On-Line is a former entertainment software company based in Los Angeles, founded in 1979.1 It was founded by Roberta Williams and Ken Williams.1 It is part of CUC International.1 It ceased to exist in 2008.1

Last updated Oct 20, 2026.

Overview

1979Founded1
  • Industryvideo game industry1
  • HeadquartersLos Angeles1

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Corporate structure

Sierra On-Line is part of a group headed by CUC International. 3 entities, 2 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • CUC International
    • Sierra On-Line Los Angeles
      • Sierra Europe Subsidiary ยท United Kingdom

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

The story

Founded by Ken Williams and Roberta Williams in 1979.1

Leadership

Who has led Sierra On-Line, and when. Pick a name to see everywhere that person has worked.

Subsidiaries and ownership

Parent company

Subsidiaries

  • Sierra Europe

From Wikidata.1

Timeline

  1. Jul 2008Dissolved Dissolved1
  2. 1996Acquired Acquired by CUC International1
  3. 1979Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1