Colossal Cave Adventure

Colossal Cave Adventure (Other, 1976) has an open-source reimplementation, Quuxplusone/Advent, and 2 other public projects, including an official source code release. An agent environment already wraps it.

Data checked 2026-10-13 · unbaked registry

Projects

Advent

ReimplementationC93 starspushed 2026-10-07no license

A modern ANSI C port of Crowther & Woods' "Adventure".

development sporadic; status playable; A modern ANSI C port of Crowther & Woods' "Adventure".

videogamepreservation/colossalcaveadventurearchived

Source releasePDP-10 FORTRAN33 starspushed 2015-06-20no license

Colossal Cave Adventure. Written in PDP-10 FORTRAN. Badass.

Archived original source

open-adventure

Source releaseC

Wikipedia: open engine AND open game data; source released 2000/2005 (?) by/for Will Crowther. Source code variants are at least available as far back as 2000. An authentic version was retrieved in 2005 "from a backup of Don Woods's studen…

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What you need

Free game data is included with at least one project.

Agent environments

microsoft/jericho

More on Other

GameMethodYearStarsLast push

OTHCeleste ClassicSource releaseReimplementation+320154.0k2025-09-21 OTHZorkSource releaseReimplementation19771.1k2026-06-30 OTHMoriaSource release19834562026-08-19 OTHHanabiAgent environment20106682023-02-14 OTHTetrisMatching decompReimplementation+11984492026-07-26 OTHLegends of Future PastAI-assisted decomp19921802026-05-17 OTHLostStatic recomp552026-09-06 OTHDiplomacyAgent environment19591852024-02-18

Found via osgameclones.com/, en.wikipedia.org/wiki/List_of_commercial_video_g, vice.com/en/article/the-first-text-adventure-gam

GitHub data checked 2026-10-13. Notes are summaries from the research pass; the project pages are the authority.