Gamez.com: Colossal Cave

Gamez.com's collection of Colossal Cave cheats and solutions.
http://gamez.com/games/pc/colossalcave.html

Colossal Cave Adventure page, The

History of the original 'Adventure' by Crowther and Woods, information about the real Colossal Cave, hints, and downloads of various versions of the game.
http://www.rickadams.org/adventure/

Colossal Cave Adventure Forum

A place to discuss the Crowther and Woods "Adventure" game in all its various versions.
http://forums.about.com/xyzzy

Colossal Cave Mazes

A homage to some of the more treacherous trails the Colossal Cave contained.
http://www.quietfire.com/maze/

Delphi: Colossal Cave Adventure forum

Forum for discussion of Adventure in its various forms.
http://forums.delphiforums.com/xyzzy/start/

Matthew Murray's Review

Capsule review. "Adventure is worth playing today for the nostalgia and for the fact that well-designed games never do go out of style."
http://www.matthewmurray.net/Reviews/ComputerGames/Adventure.html

David Tanguay's Review

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."
http://www.sentex.net/~datanguayh/games/adventure_rev.html

A-code Adventures and some adventure history

Mike Arnautov's site includes A-code language materials, downloads of Mike's two expansions of the original Adventure, and some oter downloads of historical Adventure interest.
http://www.mipmip.dsl.pipex.com/

Adventure server

Play online. BSD version (requires Java or Telnet).
http://www.forkexec.com/html/play-advent.html

Prof. Dennis G. Jerz: Colossal Cave Adventure

About the history of the game and examples from some different versions.
http://jerz.setonhill.edu/if/canon/Adventure.htm