Technology

The Tech Tree in its complete beta form

Technology is one of the driving forces behind civilization. Technological advances in agriculture and fishing caused cities to grow and thrive. Technological advances in weaponry and masonry allowed cities to drive off jealous barbarians seeking to steal their food and plunder their wealth. And technological advances in medicine and sanitation fought off the other great threat to civilization – disease.

Players acquire technology by accumulating "science," which represent the amount of science a civilization possesses. Every turn a civilization generates an amount of science that can be used for research. Each technology costs a certain amount of science to learn; the more science generated each turn the shorter the amount of time it takes to research each technology. Players can also obtain technology from some Tribal Villages. This is not guaranteed, but it's another good reason to search them out and claim them before anybody else does.

Most technologies have a "Eureka" objective / bonus. This bonus is a sort of Quest (such as "Meet another Civilization" or "Build a Quarry") which when completed, will award a research credit worth 50% of the science previously needed to unlock that tech. Players can get the research credit whether or not they are currently researching the technology in question.

Ancient Era

The Ancient Era Technologies
Technology	Cost	Era	Unlocks	Eureka Boost	Notes
Pottery	25	Ancient Era	Granary		Allows harvesting of Wheat and Rice.
Animal Husbandry	25	Ancient Era	Pasture, Camp, Kurgan		Allows harvesting of Cattle.
Mining	25	Ancient Era	Mine, Quarry		Allows clearing of Woods and harvesting of Copper.
Sailing	50	Ancient Era	Galley, Viking Longship, Fishing Boats	Found a city on the Coast.	Allows Builders to embark.
Astrology	50	Ancient Era	Shrine, Stonehenge, Holy Site, Lavra	Find a natural wonder.
Irrigation	50	Ancient Era	Hanging Gardens, Plantation, Stepwell	Farm a resource.	Allows clearing of Marsh.
Writing	50	Ancient Era	Library, Campus	Meet another civilization.
Archery	50	Ancient Era	Archer	Kill a unit with a Slinger.
Masonry	80	Ancient Era	Ancient Walls, Pyramids, Battering Ram, Great Wall	Build a Quarry.	Allows harvesting of Stone.
Bronze Working	80	Ancient Era	Barracks, Encampment, Spearman, Hoplite Iron	Kill 3 Barbarians.	Allows chopping of Rainforest.
Wheel	80	Ancient Era	Water Mill, Heavy Chariot, Maryannu Chariot Archer	Mine a resource.

Classical Era

The Classical Era Technologies
Technology	Cost	Era	Unlocks	Eureka Boost	Notes
Celestial Navigation	120	Classical Era	Lighthouse, Great Lighthouse, Harbor	Improve 2 sea resourcess.	Allows Traders to embark, and allows harvesting of Fish.
Currency	120	Classical Era	Market, Commercial Hub	Make a Trade Route.
Horseback Riding	120	Classical Era	Stable, Horseman	Build a Pasture.
Iron Working	120	Classical Era	Swordsman	Build an Iron Mine.
Shipbuilding	200	Classical Era	Colossus, Quadrireme	Own 2 Galleys.	Allows all land units to embark.
Mathematics	200	Classical Era	Petra	Build 3 different specialty districts.	+1 Movement for all naval units
Construction	200	Classical Era	Terracotta Army, Siege Tower	Build a Water Mill.
Engineering	200	Classical Era	Aqueduct, Catapult	Build Ancient Walls.

Medieval Era

The Medieval Era Technologies
Technology	Cost	Era	Unlocks	Eureka Boost	Notes
Military Tactics	300	Medieval Era	Huey Teocalli, Pikeman, Samurai	Kill a unit with a Spearman.
Apprenticeship	300	Medieval Era	Workshop, Industrial Zone	Build 3 Mines.	+1 Production to the Mine Improvement.
Stirrups	390	Medieval Era	Knight	Have the Feudalism civic.
Machinery	300	Medieval Era	Crossbowman, Lumber Mill	Own 3 Archers.
Education	390	Medieval Era	University, Hagia Sophia	Earn a Great Scientist.
Military Engineering	390	Medieval Era	Armory, Military Engineer, Medieval Road	Build an Aqueduct.
Castles	390	Medieval Era	Medieval Walls, Alhambra	Have a government with 6 policy slots.	Bonus Culture for Great Wall improvement for adjacency. Gain the ability to construct a Spy if playing as Catherine de' Medici.

Renaissance Era

The Renaissance Era Technologies
Technology	Cost	Era	Unlocks	Eureka Boost	Notes
Cartography	540	Renaissance Era	Caravel	Build 2 Harbors	+1 Gold from the Fishing Boat improvement. All naval and embarked units can navigate Ocean tiles. +1 Movement for embarked units.
Mass Production	540	Renaissance Era	Shipyard, Venetian Arsenal	Build a Lumber Mill
Banking	540	Renaissance Era	Bank, Great Zimbabwe	Have the Guilds civic.	+1 Gold from the Quarry improvement.
Gunpowder	540	Renaissance Era	Musketman, Reveals Niter	Build an Armory.
Printing	540	Renaissance Era	Forbidden City	Build 2 Universities.	Provides one more level of diplomatic visibility on all other civilizations. All Tourism yields from Great Works of Writing are doubled.
Square Rigging	660	Renaissance Era	Frigate	Kill a unit with a Musketman.
Astronomy	660	Renaissance Era	Potala Palace	Build a University adjacent to a Mountain.
Metal Casting	660	Renaissance Era	Bombard	Own 2 Crossbowman.
Siege Tactics	660	Renaissance Era	Renaissance Walls, Fort	Own 2 Bombards.

Industrial Era

The Industrial Era Technologies
Technology	Cost	Era	Unlocks	Eureka Boost	Notes
Industrialization	805	Industrial Era	Factory, Ruhr Valley, Industrial Roads	Build 3 Workshops.	+1 Production to the Mine improvement.
Scientific Theory	805	Industrial Era	Oxford University, Research Agreement	Have The Enlightenment civic.	Allows Research Agreement diplomatic action. +1 Food from the Plantation Improvement.
Ballistics	805	Industrial Era	Field Cannon	Have 2 Forts in your territory.
Military Science	805	Industrial Era	Military Academy, Cavalry, Garde Impériale	Kill a unit with a Knight.
Steam Power	925	Industrial Era	Ironclad, Reveals Coal	Build 2 Shipyards.	+2 Movement for embarked units.
Sanitation	925	Industrial Era	Sewer, Medic	Build 2 Neighborhoods.	Stepwell improvements receive +1 Housing.
Economics	925	Industrial Era	20px Stock Exchange, 20px Big Ben	Build 2 Banks.
Rifling	925	Industrial Era	20px Ranger	Build a Niter Mine.

Modern Era

The Modern Era Technologies
Technology	Cost	Era	Unlocks	Eureka Boost	Notes
Flight	1,035	Modern Era	20px Hangar, Aerodrome, 20px Observation Balloon, 20px Biplane, Airstrip	Build an Industrial Era or later wonder.	Bonus Tourism to all improvements that provide Culture.
Replaceable Parts	1,035	Modern Era	20px Infantry	Own 3 Musketman.	Upgrades Farm Improvements to Mechanized Agriculture. +1 Food Adjacency bonus for every Farm Improvements they are adjacent to.
Steel	1,035	Modern Era	Eiffel Tower, 20px Artillery, 20px Battleship	Build a Coal Mine.	+1 Production from the Lumber Mill Improvement.
Electricity	1,135	Modern Era	20px Seaport, 20px Power Plant, 20px Submarine	Own 3 Privateers.
Radio	1,135	Modern Era	20px Broadcast Center, Seaside Resort	Build a National Park.
Chemistry	1,135	Modern Era	20px Research Lab, 20px AT Crew	Complete a Research Agreement.
Combustion	1,135	Modern Era	20px Tank, Oil Well, Reveals Oil, Modern Roads	Extract an Artifact.	+1 Movement for embarked units.

Atomic Era

The Atomic Era Technologies
Technology	Cost	Era	Unlocks	Eureka Boost	Notes
Advanced Flight	1,225	Atomic Era	20px Airport, 20px Fighter, 20px Bomber, Reveals Aluminum	Build 3 Biplanes.
Rocketry	1,225	Atomic Era	Spaceport, Missile Silo, Launch Earth Satellite	Boost through Great Scientist or Spy.	+1 Production from the Quarry improvement.
Advanced Ballistics	1,225	Atomic Era	20px Anti-Air Gun, 20px Machine Gun	Build 2 Power Plants.
Combined Arms	1,225	Atomic Era	20px Aircraft Carrier, 20px Destroyer	Build an Airstrip.
Plastics	1,225	Atomic Era	Offshore Oil Rig	Build an Oil Well.	+1 Food to Fishing Boats.
Computers	1,375	Atomic Era		Have a government with 8 policy slots.	Grants the ability to construct an additional Spy. All Tourism yields are doubled.
Nuclear Fission	1,375	Atomic Era	20px Manhattan Project, 20px Build Nuclear Device, Reveals Uranium	Boost through Great Scientist or Spy.
Synthetic Materials	1,375	Atomic Era	20px Helicopter	Build 2 Aerodromes.	+1 Gold to Camps.

Information Era

The Information Era Technologies
Technology	Cost	Era	Unlocks	Eureka Boost	Notes
Telecommunications	1,540	Information Era	Nuclear Submarine	Build 2 Broadcast Centers.
Satellites	1,540	Information Era	20px Mechanized Infantry, 20px Launch Moon Landing	Boost through Great Scientist or Spy.
Guidance Systems	1,540	Information Era	20px Rocket Artillery, 20px Mobile SAM	Kill a Fighter.
Lasers	1,540	Information Era	20px Jet Fighter, 20px Missile Cruiser	Boost through Great Scientist or Spy.
Composites	1,540	Information Era	20px Modern AT, 20px Modern Armor	Own 3 Tanks.
Stealth Technology	1,540	Information Era	20px Jet Bomber	Boost through Great Scientist or Spy.
Robotics	1,795	Information Era	20px Launch Mars Habitation	Have the Globalization civic.	+1 Production to Pastures.
Nuclear Fusion	1,795	Information Era	20px Launch Mars Reactor, 20px Operation Ivy, 20px Build Thermonuclar Device	Boost through Great Scientist or Spy.
Nanotechnology	1,795	Information Era	20px Launch Mars Hydroponics	Build an Aluminum Mine.
Future Tech	2,050	Information Era			Can be completed multiple times, increasing your points towards the Score Victory.

See also

• Civics