Dunnet

Home: http://www.driver-aces.com/ronnie.html#dunnet
Media: https://en.wikipedia.org/wiki/Dunnet_(video_game)
State: mature, inactive since 1992
Keywords: adventure, text-based
Code repository: (http://git.savannah.gnu.org/cgit/emacs.git/tree/lisp/play/dunnet.el?h=emacs-25)
Code language: Emacs Lisp
Code license: GPL-3.0
Developer: Ron Schnell

Text adventure game included in Emacs.

Building