It looks like a known problem. I downloaded bsd-games Slackbuild and
source code from source/y, applied patch from Message #12 from
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=477768, rebuilt and
was able to save the game:
Welcome to Adventure!! Would you like instructions?
Somewhere nearby is Colossal Cave, where others have found fortunes in
treasure and gold, though it is rumored that some who enter are never
seen again. Magic is said to work in the cave. I will be your eyes
and hands. Direct me with commands of 1 or 2 words. I should warn
you that I look at only the first five letters of each word, so you'll
have to enter "northeast" as "ne" to distinguish it from "north".
(Should you get stuck, type "help" for some general hints. For
information on how to end your adventure, etc., type "info".)
- - -
This program was originally developed by
Will Crowther. Most of the
features of the current program were
added by Don Woods. Address
complaints about the UNIX version to Jim
You are standing at the end of a road before a small brick building.
Around you is a forest. A small stream flows out of the building and
down a gully.
I can suspend your adventure for you so you can resume later, but
you will have to wait at least 45 minutes before continuing.
Is this acceptable?
What would you like to call the saved version?
To resume, say "adventure n".
"With these rooms I might now have been familiarly acquainted."