"Zork II: The Wizard of Frobozz is an interactive fiction computer game published by Infocom in 1981. It was written by Marc Blank, Dave Lebling, Bruce Daniels and Tim Anderson. It was the second game in the popular Zork trilogy and was released for a wide range of computer systems. It begins where Zork I left off and leads into Zork III. It is Infocom's second game." Source: Wikipedia, "Zork_II," available under the CC-BY-SA License.