Escenadil is a free text adventure game engine under the same license as Perl, which aims to allow the writing of interactives stories easily, by simply editing a yaml file.
Use is documented in
man page
escenadil(1),
located
here,
in the git repository. There is also a
tar.gz
with the last versions. The last is (2013):
Install is explained in readme.
Changelog is here.
Just email the author (anaseto) with your ideas or patches.