Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Zork: The Great Underground Empire - Part I, later known as Zork I, is an interactive fiction computer game written by Marc Blank, Dave Lebling, Bruce Daniels and Tim Anderson and published by Infocom in 1980. It was the first game in the popular Zork trilogy and was released for a wide range of computer systems, followed by Zork II and Zork III. It was Infocom's first game, and sold more than 400,000 copies.

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