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The Fortress is a tile improvement in the Civilization games and a colony building (not outside a colony) in the Colonization games. It increases the defense of the units inside.


Civilization II

Civilization III

Civilization IV

Civilization V

Civilization VI


See the "Fortress" page on the Freeciv wiki.

Sid Meier's Colonization

Civilization IV: Colonization

Other games

Fortress is not present in (or the article has not been created for) the following games :

Game Article
Civilization VII Fortress (Civ7)
Civilization: Beyond Earth Fortress (CivBE)
Civilization Revolution Fortress (CivRev)
Civilization Revolution 2 Fortress (CivRev2)
CivWorld Fortress (CivWorld)
Civilization: Call to Power Fortress (CTP1)
Call to Power II Fortress (CTP2)
C-evo Fortress (C-evo)
FreeCol Fortress (FreeCol)
Sid Meier's Alpha Centauri‎ Fortress (SMAC)
Starships Fortress (Starships)

Future technology (CivRev)
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