Ancient Era
Classical Era
Medieval Era
Renaissance Era
Industrial Era
Modern Era
Information Era
Future Era
Advanced Ballistics
Traits
Era
Atomic Era
Science Cost
4200 [ICON_SCIENCE] Science
Eureka
Build 1 Oil Power Plant
Unlocks
Anti-Air Gun
Machine Gun
Self Propelled Artillery
Tech Tree
Prerequires
Combustion
Leads To
Nuclear Fission
Guidance Systems
Language