/usr/share/bzflag/l10n/ is in bzflag-data 2.0.16.20100405+nmu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/bzflag/l10n/ISO-639-2_values_8bits.txt
/usr/share/bzflag/l10n/bzflag_cs_CZ.po
/usr/share/bzflag/l10n/bzflag_da.po
/usr/share/bzflag/l10n/bzflag_de.po
/usr/share/bzflag/l10n/bzflag_en_US_l33t.po
/usr/share/bzflag/l10n/bzflag_en_US_redneck.po
/usr/share/bzflag/l10n/bzflag_es.po
/usr/share/bzflag/l10n/bzflag_fr.po
/usr/share/bzflag/l10n/bzflag_it.po
/usr/share/bzflag/l10n/bzflag_kg.po
/usr/share/bzflag/l10n/bzflag_lt.po
/usr/share/bzflag/l10n/bzflag_nl.po
/usr/share/bzflag/l10n/bzflag_pt.po
/usr/share/bzflag/l10n/bzflag_sv.po
/usr/share/bzflag/l10n/bzflag_xx.po