/usr/share/crawl/settings/ is in crawl-common 2:0.19.3-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/crawl/settings/0.12_monster_glyphs.txt
/usr/share/crawl/settings/0.13_monster_glyphs.txt
/usr/share/crawl/settings/0.14_monster_glyphs.txt
/usr/share/crawl/settings/0.16_monster_glyphs.txt
/usr/share/crawl/settings/0.17_monster_glyphs.txt
/usr/share/crawl/settings/0.18_monster_glyphs.txt
/usr/share/crawl/settings/0.9_monster_glyphs.txt
/usr/share/crawl/settings/034_command_keys.txt
/usr/share/crawl/settings/052_monster_glyphs.txt
/usr/share/crawl/settings/060_monster_glyphs.txt
/usr/share/crawl/settings/071_monster_glyphs.txt
/usr/share/crawl/settings/080_monster_glyphs.txt
/usr/share/crawl/settings/advanced_optioneering.txt
/usr/share/crawl/settings/colemak_command_keys.txt
/usr/share/crawl/settings/dec_glyphs.txt
/usr/share/crawl/settings/dvorak_command_keys.txt
/usr/share/crawl/settings/ibm_glyphs.txt
/usr/share/crawl/settings/init.txt
/usr/share/crawl/settings/no_vi_command_keys.txt
/usr/share/crawl/settings/old_unicode_glyphs.txt
/usr/share/crawl/settings/safe_move_shift.txt