adventure [1] (Wikipedia [2]), aka. ADVENT or Colossal Cave, is a textual adventure game, locating and exploring Colossal Cave, finding the hidden therein, and bringing back to the building. You can get an instruction at the beginning, and with `help` and `info` command. It was originally developed by William Crowther in FORTRAN for PDP-10 in 1976, who explored Mammoth Cave National Park [3] in early 70s. In 1977, Jim Gillogly ported to C for Unix, and became part of BSD distributions since then, hence from bsdgames. Interesting enough, Microsoft had released versions for MS-DOS and Apple computers in 1981 and 1980. The game has a point scoring system, the very first game with the system. It also provides save functionality, but you need to wait for 45 minutes before you can resume playing. Not sure why it has such time limit. $$# * 2004-01-28 from bsd-games 2.17 (2005-02-18) via Gentoo games-misc/bsd-games-2.17-r5 * In C * By William Crowther, Don Woods, Jim Gillogly, et al. * New...
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