Oxford Digital Enterprises
They are or have been distributed by Avalon Hill.
Macbeth, the Computer AdventureType: Graphics Written 1985.
Notes: This came packaged with a copy of Shakespeare's play. It is divided into four parts: In part one you play Macbeth, in part two you play Lady Macbeth, in part three you play one of the witches, and in part four you play Macbeth again.
Adventureland was created by Hans Persson and is now maintained by Stefan Meier.
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