On the very first Unix version of Eskimo running Xenix on a Tandy 16B, then later Tandy 6000, and on our SunOS shell server eskimo.com, we had a number of BSD text based games such as adventure, hack, phantasia, etc.
I have installed on shellx, a BSD game package that makes many of these available again. They are located in /usr/games and to run them you need to add /usr/games to your $PATH variable. You can do this by adding to your .profile or .kshrc or other appropriate shell start up file:
export PATH=$PATH:/usr/games
This is a list of available games:
---x--s--x 1 games 178794 May 22 17:04 adventure ---x--s--x 1 games 20925 May 22 17:04 arithmetic ---x--s--x 1 games 132577 May 22 17:04 atc ---x--s--x 1 games 123623 May 22 17:04 backgammon ---x--s--x 1 games 247737 May 22 17:04 battlestar ---x--s--x 1 games 14026 May 22 17:04 bcd ---x--s--x 1 games 13112 May 22 17:04 caesar ---x--s--x 1 games 54952 May 22 17:04 canfield ---x--s--x 1 games 13289 May 22 17:04 cfscores ---x--s--x 1 games 3798 May 22 17:04 countmail ---x--s--x 1 games 24287 May 22 17:04 fish ---x--s--x 1 games 218013 Nov 10 2010 gtetrinet ---x--s--x 1 games 737118 May 22 17:04 hack ---x--s--x 1 games 36197 May 22 17:04 hangman ---x--s--x 1 games 67689 May 22 17:04 hunt ---x--s--x 1 games 124320 May 22 17:04 huntd ---x--s--x 1 games 85703 May 22 17:04 mille ---x--s--x 1 games 96662 May 22 17:04 monop ---x--s--x 1 games 15821 May 22 17:04 morse ---x--s--x 1 games 18387 May 22 17:04 number ---x--s--x 1 games 156762 May 22 17:04 phantasia ---x--s--x 1 games 14437 May 22 17:04 pig ---x--s--x 1 games 19492 May 22 17:04 pom ---x--s--x 1 games 14231 May 22 17:04 ppt ---x--s--x 1 games 85412 May 22 17:04 primes ---x--s--x 1 games 34484 May 22 17:04 quiz ---x--s--x 1 games 17422 May 22 17:04 rain ---x--s--x 1 games 14351 May 22 17:04 random ---x--s--x 1 games 72454 May 22 17:04 robots ---x--s--x 1 games 2001 May 22 17:04 rot13 ---x--s--x 1 games 213871 May 22 17:04 sail ---x--s--x 1 games 41302 May 22 17:04 snake ---x--s--x 1 games 12627 May 22 17:04 snscore ---x--s--x 1 games 123297 May 22 17:04 teachgammon ---x--s--x 1 games 57680 May 22 17:04 tetris-bsd ---x--s--x 1 games 225757 May 22 17:04 trek ---x--s--x 1 games 2157 May 22 17:04 wargames ---x--s--x 1 games 23860 May 22 17:04 worm ---x--s--x 1 games 22285 May 22 17:04 worms ---x--s--x 1 games 1166 May 22 17:04 wtf ---x--s--x 1 games 36197 May 22 17:04 wump