Removing linux-image-extra-4.4.0-43-generic (4.4.0-43.63) ...
Purging configuration files for linux-image-extra-4.4.0-43-generic (4.4.0-43.63) ...
Removing gnome-nibbles (1:3.7.4-0ubuntu1) ...
Purging configuration files for gnome-nibbles (1:3.7.4-0ubuntu1) ...
rm: cannot remove '/var/games/': Is a directory
dpkg: error processing package gnome-nibbles (--purge):
 subprocess installed post-removal script returned error exit status 1
Removing gnome-robots (1:3.7.90-0ubuntu1) ...
Purging configuration files for gnome-robots (1:3.7.90-0ubuntu1) ...
rm: cannot remove '/var/games/': Is a directory
dpkg: error processing package gnome-robots (--purge):
 subprocess installed post-removal script returned error exit status 1