Sierra
Sierra, formerly known as Sierra On-Line, was one of the major commercial producers of adventure games, the other one being LucasArts. The company is now defunct, its trademarks property of Vivendi.
Famous series by Sierra include,
- King's Quest I-VIII
- Space Quest I-VI
- Police Quest I-IV
- Leisure Suit Larry I-VI
- Conquests of Camelot / Conquests of the Longbow
- Laura Bow I-II