Marc Jacobs | Marc Chagall | Marc Anthony | Marc Ribot | Marc Almond | Blank & Jones | Marc Nelson | Marc Bolan | Jean-Marc Lofficier | Marc Cohn | Marc Connelly | Franz Marc | Marc Lavoine | Marc Garneau | Les Blank | Marc Quinn | Marc Newson | Marc Lazar | Marc Isambard Brunel | Marc Allégret | MARC Train | Marc Forster | Marc Blitzstein | Marc Bamuthi Joseph | Marc Augé | Marc-Antoine Charpentier | Marc | Steve Blank | Marc Mellits | Marc LeBlanc |
Zork: The Undiscovered Underground (or ZUU for short) is an interactive fiction video game written by former Infocom Implementors Marc Blank and Michael Berlyn and implemented by G. Kevin Wilson using the Inform language.