Appears to be a hack of games-board/cgoban. Regardless, it's in the list in xscreensaver-demo. Ugliness: have to patch Makefile.in to respect DESTDIR; have to patch source to allow -root and -window-id (necessary for xscreensaver-demo previews)
Created attachment 26231 [details] Ebuild
Created attachment 26232 [details, diff] Makefile.in patch
Created attachment 26233 [details, diff] Patch for --root and --window-id
Alastair, what's your comment on those ebuilds? should we make them PDEPEND of xscreensaver or something like that?
still seems to be there just without maintainer for gentoo. if you want to maintain it yourself, feel free to reopen and join project sunrise, details here: http://www.gentoo.org/proj/en/sunrise