There are 34 civilizations and 52 leaders total in Civilization IV. Some civilizations have three leaders, others have two, and a few have just one. Unlike Civilization III, in Civ4 the traits are associated with the leaders, not with the civilization. Each leader has two traits. Each trait provides a unique bonus and usually cuts the hammer cost of one or two city improvements by half.
In addition, each civilization has a unique flag and its units will speak in the civilization’s language when clicked (like in RTS games). Every civilization has their own unique unit and unique building, both of which give an additional bonus. To view the specifics about these unique aspects of each civilization, visit the Units and City Improvements pages.
NOTE: Information in this section is correct as of Beyond the Sword v3.17.
The Leader Traits:
Trait
Benefit
Aggressive
Free Combat I promotion for melee and gunpowder units.
Double production speed of Barracks and Drydock.
Creative
+2 culture per city.
Double production speed of Library, Theater, and Colosseum.
Expansive
+2 health per city.
Double production speed of Granary and Harbor.
25% faster production of Workers.
Financial
+1 commerce on plots with at least 2 commerce.
Industrious
Wonder production increased 50 percent.
Double production speed of Forge.
Organized
Civic upkeep reduced 50 percent.
Double production speed of Lighthouse, Factory, and Courthouse.
Philosophical
Great People birth rate increased 100 percent.
Double production speed of University.
Spiritual
No anarchy.
Double production speed of Temples and the Cristo Redentor wonder.
Imperialistic
Great General emergence increased 100 percent.
50% faster production of Settlers.
Protective
Free Drill I and City Garrison I promotions for archery and gunpowder units.
Double production speed of Walls and Castle.
Charismatic
+1 happiness per city.
-25% XP needed for unit promotions.
+1 happiness from Monument and Broadcast Tower.
The 34 Civilizations:
Note: Click a leader icon to see the large leader portrait. All information is for the Beyond the Sword expansion pack, version 3.17, except for the “Original Traits” column, which refers to the traits of some leaders in the original game without expansion packs, as some leaders’ traits were changed in Warlords and Beyond the Sword. If there is only one set of traits, either that leader came in one of the expansion packs or has not had their traits modified.