Bug#1054904:

[Chris Carr]

Hi,

(Apologies for the delay, I didn't get a copy of that reply, which I think
is because I am only uploader now not maintainer.)

Thanks - I understand now. The only things stored outside the personal
space (~/.angband/) are the save files and the high score file.
Older versions had private score files - it wasn't possible to have
system-wide score files due to a security bug in gtk that prevented
building the package with setgid. Now gtk has been deprecated upstream the
package is built with setgid so that all users feature in the same high
score file - but of course it started blank, because it's a new one in a
new place.

So I don't think either you or anyone else has actually lost anything - but
you're right that it's worth a mention in NEWS.Debian in case people want
to go hunting for their old private high score file.

Best

Chris