Zork I: The great underground empire
Zork I: The great underground empire downloads
The original version of Zork I was published by Personal Software and simply called Zork. It was distributed in clear plastic bags containing only the game disk and a 36-page booklet. Infocom's first "self-published" version of Zork I was in the so-called "Folio" format which included a single piece of paper describing how to run the game. The feelies noted above were only introduced when Zork I was re-released in the "Grey box" format.
There is also an abridged version, called Mini-Zork I, dated November 24, 1987. Mini-Zork was released free of charge as a promotion.
A Japanese version was released for the Sega Saturn and PlayStation in 1996. This Japanese version includes graphics, sound effects, music, and auto-mapping. Of course, it was only released in Japan.
Fans remade Zork I as a 3d game using the Neverwinter Nights game engine. The remake is titled Zork I: The Great Underground Empire.