Adventure by Crowther and Woods, based on Kentucky's Colossal Cave, which started the adventure game genre. This game has been released in various variants under various titles, including Colossal Cave, Colossal Adventure, Microsoft Adventure, Adventure in Humungous Cave, Original Adventure, and ADVENT.
History of the original 'Adventure' by Crowther and Woods, information about the real Colossal Cave, hints, and downloads of various versions of the game.
Rated -2 on -5 to +5 scale. "If there was a good story to go with it, the first adventure game would have also been one of the best."
Forum for discussion of Adventure in its various forms.
Mike Arnautov's site includes a humor section, downloads of A-code implementations of some Adventure versions, as well as various personal works.
About the history of the game and examples from some different versions.
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