Introduction
Ancient Era
Pottery
Mining
Animal Husbandry
Sailing
Astrology
Irrigation
Writing
Archery
Calendar
Wheel
Bronze Working
Masonry
Ancient Era
Classical Era
Celestial Navigation
Paper Making
Currency
Iron Working
Horseback Riding
Shipbuilding
Mathematics
Engineering
Construction
Classical Era
Medieval Era
Compass
Apprenticeship
Machinery
Metal Casting
Buttress
Education
Military Engineering
Castles
Stirrups
Medieval Era
Renaissance Era
Cartography
Astronomy
Mass Production
Printing
Military Tactics
Gunpowder
Square Rigging
Physics
Banking
Siege Tactics
Renaissance Era
Industrial Era
Scientific Theory
Industrialization
Civil Engineering
Military Science
Ballistics
Steam Power
Economics
Sanitation
Rifling
Industrial Era
Modern Era
Flight
Electricity
Chemistry
Biology
Steel
Replaceable Parts
Radio
Refining
Combustion
Modern Era
Atomic Era
Advanced Flight
Computers
Advanced Ballistics
Combined Arms
Plastics
Rocketry
Nuclear Fission
Synthetic Materials
Atomic Era
Information Era
Telecommunications
Satellites
Guidance Systems
Lasers
Composites
Stealth Technology
Robotics
Nuclear Fusion
Nanotechnology
Information Era
Future Era
Seasteads
Advanced AI
Advanced Power Cells
Cybernetics
Smart Materials
Predictive Systems
Offworld Mission
Future Tech
Future Era
Satellites
Traits
Era
Information Era
Science Cost
6600
Science
Eureka
Complete Launch Earth Satellite Project.
Unlocks
Mechanized Infantry
Solar Farm
Launch Moon Landing
S.A.S.R.
Tech Tree
Prerequires
Advanced Flight
Rocketry
Leads To
Robotics
Language
中文(简体)
English (United States)