/usr/lib/openarena-server/baseoa/pak2-players-mature.pk3 is in openarena-server 0.8.8+dfsg-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/openarena-server/baseoa/../../../share/games/openarena/baseoa/pak2-players-mature.pk3