This timeline details the formation of Sierra On-Line (originally On-Line Systems) and its early growth, primarily driven by Roberta's creative vision and Ken's technical expertise.
Inspiration from 'Colossal Cave Adventure'
1979
Roberta plays 'Colossal Cave Adventure', a text-based adventure game, and is immediately captivated. This experience sparks her idea for a graphical adventure game, combining text with visual elements.
On-Line Systems Founded
1979
Ken Williams, with his programming skills, and Roberta Williams, with her creative vision, found On-Line Systems. Ken develops software for Apple II computers, while Roberta begins designing her first game.
'Mystery House' Released
1980
Roberta Williams' first game, 'Mystery House', is released. It's one of the first graphical adventure games for personal computers and becomes a surprising commercial success.
Expansion and Growth
Early 1980s
On-Line Systems experiences rapid growth, fueled by the success of 'Mystery House' and subsequent adventure games. The company hires more employees and expands its product line.
Name Change to Sierra On-Line
1982
On-Line Systems officially changes its name to Sierra On-Line, reflecting the company's focus on computer games and its growing brand recognition.
