Zork

1. A series of text-based adventure games; the original game so named.

plural Zorks

1. A game in this series.

   Yes, it was Zork Legacy. The box says it has Nemesis, RTZ, and Zorks 1, 2, 3, and 0.

   2002 October 6, Muke Tever, “zorks GI and Nemesis”, in rec.games.int-fiction (Usenet)

   2 more examples

   The original Zorks are available as part of Lost Treasures of Infocom, or more recently as The Zork Anthology. (ZA is included free with current copies of RTZ.)

   1995 July 25, Kenneth Plotkin, “Are the Zorks related?”, in comp.sys.ibm.pc.games.adventure (Usenet)

   What if someone were to take all Zorks I-III and combine them into one big master program with the plot having II follow I and III follow II.

   1998 September 23, Al, “Interesting Idea For Zorks I-III”, in rec.games.int-fiction (Usenet)