Civilization IV comes with 86 technologies. The Beyond the Sword expansion pack adds six new technologies and changes four of the old ones. The Warlords expansion pack neither adds nor changes any technologies.

Civilization IV Technology Tree

Technologies[edit | edit source]

Technology Cost Enables Obsoletes

Ancient[edit | edit source]

The Wheel The Wheel 60 Beaker (Civ4).png Units:
Chariot

Improvements:
Road

Agriculture Agriculture 60 Beaker (Civ4).png Improvements:
Farm
Animal Husbandry Animal Husbandry 100 Beaker (Civ4).png Improvements:
Pasture

Other effects:
Reveals Horse

Fishing Fishing 40 Beaker (Civ4).png Units:
Work Boat
Hunting Hunting 40 Beaker (Civ4).png Units:
Scout
Spearman

Improvements:
Camp

Mysticism Mysticism 50 Beaker (Civ4).png Buildings:
Monument

Wonders:
Stonehenge

Archery Archery 60 Beaker (Civ4).png Units:
Archer
Crossbowman (with Machinery)
Horse Archer (with Horseback Riding)
Longbowman (with Feudalism)
Pottery Pottery 80 Beaker (Civ4).png Buildings:
Granary

Improvements:
Cottage

Writing Writing 120 Beaker (Civ4).png Buildings:
Library

Other:
Open Borders

Sailing Sailing 100 Beaker (Civ4).png Units:
Galley

Buildings:
Lighthouse

Other:
Coastal trading

Masonry Masonry 80 Beaker (Civ4).png Buildings:
Walls
Aqueduct

Wonders:
Pyramids
Great Lighthouse
Great Wall

Improvements:
Quarry

Mining Mining 50 Beaker (Civ4).png Improvements:
Mine
Priesthood Priesthood 60 Beaker (Civ4).png Buildings:
Temple

Wonders:
Oracle

Bronze Working Bronze Working 120 Beaker (Civ4).png Units:
Axeman

Civics:
Slavery

Other:
Chopping down forests

Polytheism Polytheism 100 Beaker (Civ4).png Wonders:
Parthenon
Temple of Artemis

Other:
First to discover founds Hinduism

Monotheism Monotheism 120 Beaker (Civ4).png Civics:
Organized Religion

Other:
First to discover founds Judaism

Meditation Meditation 80 Beaker (Civ4).png Buildings:
Monastery

Other:
First to discover founds Buddhism

Classical[edit | edit source]

Monarchy Monarchy 300 Beaker (Civ4).png Improvements:
Winery

Civics:
Hereditary Rule

Alphabet Alphabet
(changed in BtS)
300 Beaker (Civ4).png Other:
Technology trading
Mathematics Mathematics 250 Beaker (Civ4).png Buildings:
Aqueduct

Wonders:
Hanging Gardens

Improvements:
Fort

Other effects:
50% more hammers by chopping down forest

Construction Construction 350 Beaker (Civ4).png Units:
War Elephant
Catapult

Buildings:
Colosseum

Other:
Bridge building

Code of Laws Code of Laws 350 Beaker (Civ4).png Buildings:
Courthouse

Wonders:
Chichen Itza

Civics:
Caste System

Other:
First to discover founds Confucianism

Metal Casting Metal Casting 450 Beaker (Civ4).png Units:
Trireme

Buildings:
Forge

Wonders:
Colossus

Improvements:
Workshop

Compass Compass 400 Beaker (Civ4).png Units:
Explorer

Buildings:
Harbor

Currency Currency 400 Beaker (Civ4).png Buildings:
Market
Grocer

Other effects:
+1 trade routes
Gold trading

Horseback Riding Horseback Riding 250 Beaker (Civ4).png Units:
Horse Archer (with Archery)
Knight (with Guilds)
Cavalry (with Military Tradition and Rifling)
Cuirassier (with Gunpowder and Military Tradition)
Drama Drama 300 Beaker (Civ4).png Buildings:
Theater

Wonders:
Globe Theatre

Other:
Culture slider

Calendar Calendar 350 Beaker (Civ4).png Improvements:
Plantation

Other:
Centers the world map

Stonehenge
Obelisk
Iron Working Iron Working 200 Beaker (Civ4).png Units:
Swordsman

Other effects:
Reveals Iron
Can clear jungles

Literature Literature 200 Beaker (Civ4).png Wonders:
Heroic Epic
National Epic
Great Library
Aesthetics Aesthetics (BtS) 300 Beaker (Civ4).png Wonders:
Parthenon
Statue of Zeus
Shwedagon Paya

Medieval[edit | edit source]

Banking Banking 700 Beaker (Civ4).png Buildings:
Bank

Civics:
Mercantilism

Engineering Engineering 1000 Beaker (Civ4).png Units:
Pikeman
Trebuchet (Warlords)

Buildings:
Castle

Wonders:
Hagia Sophia

Other:
+1 road movement

Guilds Guilds 1000 Beaker (Civ4).png Units:
Knight (with Horseback Riding)
Feudalism Feudalism 700 Beaker (Civ4).png Units:
Longbowman (with Archery)

Civics:
Vassalage
Serfdom

Machinery Machinery 700 Beaker (Civ4).png Units:
Crossbowman (with Archery)
Maceman (with Civil Service)

Improvements:
Windmill
Watermill

Civil Service Civil Service 800 Beaker (Civ4).png Units:
Maceman (with Machinery)

Civics:
Bureaucracy

Other effects:
Farms spread irrigation

Philosophy Philosophy 800 Beaker (Civ4).png Wonders:
Angkor Wat

Civics:
Pacifism

Other:
First to discover founds Taoism

Optics Optics 600 Beaker (Civ4).png Units:
Caravel

Improvements:
Whaling Boats

Other effects:
Can see +1 tiles across water

Paper Paper 600 Beaker (Civ4).png

Other:
Map trading

Music Music 600 Beaker (Civ4).png Buildings:
Cathedral

Wonders:
Sistine Chapel

Other:
Building culture
First to discover receives Great Artist

Divine Right Divine Right 1200 Beaker (Civ4).png Wonders:
Versailles
Spiral Minaret

Other:
First to discover founds Islam

Renaissance[edit | edit source]

Economics Economics 1400 Beaker (Civ4).png Civics:
Free Market

Other:
First to discover receives Great Merchant

Castle
Constitution Constitution 2000 Beaker (Civ4).png Buildings:
Jail

Civics:
Representation

Astronomy Astronomy 2000 Beaker (Civ4).png Units:
Galleon
Frigate

Buildings:
Observatory

Other:
Trade through ocean tiles

Colossus
Democracy Democracy 2800 Beaker (Civ4).png Buildings:
Security Bureau

Wonders:
Statue of Liberty

Civics:
Universal Suffrage
Emancipation

Education Education 1800 Beaker (Civ4).png Buildings:
University

Wonders:
Oxford University

Chemistry Chemistry 1800 Beaker (Civ4).png Units:
Privateer
Frigate

Other effects:
+1 Hammer (Civ4).png from Workshops

Corporation (technology) Corporation (technology) 1600 Beaker (Civ4).png Wonders:
Wall Street

Other:
+1 trade route
Corporations

Great Lighthouse
Replaceable Parts Replaceable Parts 1800 Beaker (Civ4).png Improvements:
Lumbermill

Other:
+1 Hammer (Civ4).png from windmills and watermills

Gunpowder Gunpowder 1200 Beaker (Civ4).png Units:
Musketman
Rifling Rifling 2400 Beaker (Civ4).png Units:
Rifleman
Infantry (with Assembly Line)
Marine (with Industrialism)
Mechanized Infantry (with Robotics)
Tank (with Industrialism)
Cavalry (with Horseback Riding and Gunpowder)
Chichen Itza
Walls
Printing Press Printing Press 1600 Beaker (Civ4).png Other effects:
+1 Coin (Civ4).png from Villages and Towns
Nationalism Nationalism 1800 Beaker (Civ4).png Wonders:
Hermitage
Taj Mahal

Civics:
Nationhood

Military Science Military Science (BtS) 2000 Beaker (Civ4).png Units:
Grenadier
Ship of the Line (with Astronomy)

Buildings:
Military Academy

Military Tradition Military Tradition 2000 Beaker (Civ4).png Units:
Cuirassier (with Gunpowder and Horseback Riding)
Cavalry (with Rifling and Horseback Riding)

Wonders:
West Point

Other:
Defensive pacts

Liberalism Liberalism 1400 Beaker (Civ4).png Civics:
Free Speech
Free Religion

Other:
First to discover gets 1 free tech

Industrial[edit | edit source]

Railroad Railroad 4500 Beaker (Civ4).png Units:
Machine Gun

Improvements:
Railroads

Electricity Electricity 4500 Beaker (Civ4).png Buildings:
Bunker
Bomb Shelter

Wonders:
Broadway

Other effects:
+1 Coin (Civ4).png from windmills
+2 Coin (Civ4).png from watermills

Assembly Line Assembly Line 5000 Beaker (Civ4).png Units:
Infantry (with Rifling)

Buildings:
Factory
Coal Plant

Wonders:
Pentagon

Steel Steel 2800 Beaker (Civ4).png Units:
Cannon
Ironclad (with Steam Power)

Buildings:
Drydock

Wonders:
Ironworks

Medicine Medicine 4500 Beaker (Civ4).png Buildings:
Hospital

Wonders:
Red Cross

Civics:
Environmentalism

Industrialism Industrialism 6500 Beaker (Civ4).png Units:
Marine (with Rifling)
Tank (with Rifling)
Battleship
Carrier

Buildings:
Industrial Park

Other effects:
Reveals Aluminum

Ivory
Communism Communism 2800 Beaker (Civ4).png Units:
Spy

Wonders:
Scotland Yard
Kremlin

Civics:
State Property

Other:
Permanent alliances

Steam Power Steam Power 3200 Beaker (Civ4).png Units:
Ironclad (with Steel)

Improvements:
Levee

Other:
Reveals Coal
+50% faster improvement building

Hagia Sophia
Fission Fission 5500 Beaker (Civ4).png Units:
ICBM
Tactical Nuke

Buildings:
Nuclear Plant

Projects:
Manhattan Project

Combustion Combustion 3600 Beaker (Civ4).png Units:
Transport
Destroyer
Submarine (with Radio)

Improvements:
Well

Whale
Biology Biology 3600 Beaker (Civ4).png Other:
Building farms without irrigation
+1 Bread (Civ4).png from farms
Physics Physics 4000 Beaker (Civ4).png Units:
Airship (BtS)

Other:
Reveals Uranium
First to discover receives Great Scientist

Fascism Fascism 2400 Beaker (Civ4).png Units:
Paratrooper
Mt. Rushmore

Civics:
Police State

Other:
Permanent alliances
First to discover receives Great General

Artillery Artillery 4000 Beaker (Civ4).png Units:
Artillery
Anti-Tank
Mobile Artillery (with Laser)

Modern[edit | edit source]

Radio Radio 6000 Beaker (Civ4).png Units:
Submarine (with Combustion)
Bomber (with Flight)

Wonders:
Eiffel Tower
Rock 'n' Roll

Flight Flight 5000 Beaker (Civ4).png Units:
Fighter
Bomber (with Radio)
Gunship (with Rocketry and Advanced Flight)
Jet Fighter (with Composites)
Stealth Bomber (with Stealth)

Buildings:
Airport

Mass Media Mass Media 3600 Beaker (Civ4).png Buildings:
Broadcast Tower

Wonders:
Hollywood
United Nations

Plastics Plastics 7000 Beaker (Civ4).png Buildings:
Hydro Plant

Wonders:
Three Gorges Dam

Improvements:
Offshore Platform

Fur
Computers Computers
(changed in BtS)
6500 Beaker (Civ4).png Units:
Modern Armor (with Composites)

Buildings:
Laboratory (with Superconductors)

Projects:
The Internet

Angkor Wat
Spiral Minaret
University of Sankore
Ecology Ecology 5500 Beaker (Civ4).png Buildings:
Recycling Center

Spaceship parts:
SS Life Support

Civics:
Environmentalism

Other:
Cleaning Fallout

Refrigeration Refrigeration 4000 Beaker (Civ4).png Buildings:
Supermarket

Other:
+1 movement for naval units

Rocketry Rocketry 5000 Beaker (Civ4).png Units:
SAM Infantry
Gunship (with Flight and Advanced Flight)
Guided Missile (with Radio)
Tactical Nuke (with Fission)
ICBM (with Fission)
Attack Submarine (with Radio and Combustion)

Projects:
Apollo Program

Spaceship parts:
SS Casing

Robotics Robotics
(changed in BtS)
8000 Beaker (Civ4).png Units:
Mechanized Infantry
Stealth Bomber (with Stealth)
Stealth Destroyer (with Stealth)

Buildings:
Space Elevator (with Satellites)

Spaceship parts:
SS Docking Bay

Satellites Satellites 6000 Beaker (Civ4).png Spaceship parts:
SS Docking Bay

Buildings:
Space Elevator (with Robotics)

Other effects:
Reveals entire world map

Fusion Fusion 8000 Beaker (Civ4).png Spaceship parts:
SS Engine

Other effects:
First to discover receives Great Engineer

Laser Laser (BtS) 7000 Beaker (Civ4).png Units:
Mobile Artillery (with Artillery)
Mobile SAM

Buildings:
SDI

Stealth Stealth (BtS) 8000 Beaker (Civ4).png Units:
Stealth Bomber (with Robotics)
Stealth Destroyer (with Robotics)
Genetics Genetics 7000 Beaker (Civ4).png Spaceship parts:
SS Stasis Chamber

Other effects:
+1 Health (Civ4).png in all cities

Fiber Optics Fiber Optics
(changed in BtS)
7500 Beaker (Civ4).png Projects:
The Internet

Spaceship parts:
SS Cockpit

Kremlin
Advanced Flight Advanced Flight (BtS) 5000 Beaker (Civ4).png Units:
Gunship (with Rocketry and Flight)
Stable
Superconductors Superconductors (BtS) 6500 Beaker (Civ4).png Buildings:
Laboratory (with Computers)

Spaceship parts:
SS Thrusters

Future Tech Future Tech 8000 Beaker (Civ4).png Other:
+1 Health (Civ4).png in all cities
+1 Happiness (Civ4).png in all cities
Civilization IV [edit]
WarlordsBeyond the SwordColonization

Buildings (Unique) • CivicsCivilizationsErasLeaders (Traits) • ReligionsResourcesSoundtrackTechnologiesTerrains (Tile Improvement) • Units (UniqueClassPromotions) • Wonders

Coin (Civ4).png CommerceCulture (Civ4).png CultureBread (Civ4).pngFoodEspionage (Civ4).png EspionageHappiness (Civ4).png HappinessHealth (Civ4).png HealthPower (Civ4).png PowerHammer (Civ4).png ProductionBeaker (Civ4).png Science

† Total conversion remake of the game Sid Meier's Colonization using Civilization IV engine
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