/usr/share/games/freeciv/civ2/ is in freeciv-data 2.5.10-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/games/freeciv/civ2/buildings.ruleset
/usr/share/games/freeciv/civ2/cities.ruleset
/usr/share/games/freeciv/civ2/effects.ruleset
/usr/share/games/freeciv/civ2/game.ruleset
/usr/share/games/freeciv/civ2/governments.ruleset
/usr/share/games/freeciv/civ2/nations.ruleset
/usr/share/games/freeciv/civ2/script.lua
/usr/share/games/freeciv/civ2/techs.ruleset
/usr/share/games/freeciv/civ2/terrain.ruleset
/usr/share/games/freeciv/civ2/units.ruleset
/usr/share/games/freeciv/civ2civ3/buildings.ruleset
/usr/share/games/freeciv/civ2civ3/cities.ruleset
/usr/share/games/freeciv/civ2civ3/effects.ruleset
/usr/share/games/freeciv/civ2civ3/game.ruleset
/usr/share/games/freeciv/civ2civ3/governments.ruleset
/usr/share/games/freeciv/civ2civ3/nations.ruleset
/usr/share/games/freeciv/civ2civ3/script.lua
/usr/share/games/freeciv/civ2civ3/techs.ruleset
/usr/share/games/freeciv/civ2civ3/terrain.ruleset
/usr/share/games/freeciv/civ2civ3/units.ruleset