Detail map of Simi Valley, California, United States Overview map of Simi Valley, California, United States

A: Simi Valley, California, United States

"Mystery House," the First Graphical Computer Adventure Game

1979 to 1980

In 1979 and 1980 Roberta and Ken Williams wrote Mystery House for the Apple II. Containing 70 simple two-dimensional drawings by Roberta Williams, Mystery House was the first computer adventure game with graphics.  The game was also eventually released into the public domain.

♦ Later it was converted into an ap. In December 2013 you could buy version 1.0.6 of the program in the iTunes Store at this link.

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