Games in the bsd-games package which support high-score lists aren't able
to write in these lists. It appears it would make sense to let all files
in /var/lib/... belong to group "games", and be writeable by group. And
then to make the applicable games (atc, battlestar, canfield, cfscores,
phantasia, robots sail, snake, and tetris I believe) also belong to group
games, and be setgid.
Thanks for letting me knwo about this. It's been broken for a very long time,
now it finally works :) It should show up in rawhide the next time it is updated.