ADVENT
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ADVENT: /ad´vent/, n.

  The prototypical computer adventure game, first designed by Will Crowther on the PDP-10 in the mid-1970s as an attempt at computer-refereed fantasy gaming, and expanded into a puzzle-oriented game by Don Woods at Stanford in 1976. (Woods had been one of the authors of INTERCAL.) Now better known as Adventure or Colossal Cave Adventure, but the TOPS-10 operating system permitted only six-letter filenames in uppercase. See also vadding, Zork, and Infocom.

  Figure 1. Screen shot of the original ADVENT game

      Orange River Chamber
      You are in a splendid chamber thirty feet high. The walls are frozen rivers of
      orange stone. An awkward canyon and a good passage exit from east and west
      sidesof the chamber.

      A cheerful little bird is sitting here singing.

      >drop rod
      Dropped.

      >take bird
      You catch the bird in the wicker cage.

      >take rod
      Taken.

      >w
      At Top of Small Pit
      At your feet is a small pit breathing traces of white mist. A west passage ends
      here except for a small crack leading on.

      Rough stone steps lead down the pit.

      >down

      In Hall of Mists
      You are at one end of a vast hall stretching forward out of sight to the west.
      There are openings to either side. Nearby, a wide stone staircase leads
      downward. The hall is filled with wisps of white mist swaying to and fro almost
      as if alive. A cold wind blows up the staircase. There is a passage at the top
      of a dome behind you.

      Rough stone steps lead up the dome.

  This game defined the terse, dryly humorous style since expected in text adventure games, and popularized several tag lines that have become fixtures of hacker-speak: “A huge green fierce snake bars the way!” “I see no X here” (for some noun X). “You are in a maze of twisty little passages, all alike.” “You are in a little maze of twisty passages, all different.” The ‘magic words’ xyzzy and plugh also derive from this game.

  Crowther, by the way, participated in the exploration of the Mammoth & Flint Ridge cave system; it actually has a Colossal Cave and a Bedquilt as in the game, and the Y2 that also turns up is cavers' jargon for a map reference to a secondary entrance.

  ADVENT sources are available for FTP at ftp://ftp.wustl.edu/doc/misc/if-archive/games/source/advent.tar.Z. You can also play it as a Java applet. There is a good page of resources at the Colossal Cave Adventure Page.

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