Eras
Two ladders run through the game. The tech era is how far your research has come. The reach era is how far into the system you can physically go, and only Propulsion research raises it.
| Era | Enters ≈ | Year ≈ | Reach | Techs | New buildings & units |
|---|---|---|---|---|---|
| 1. Atomic | turn 1 | 1960 | Surface | 14 | 38 |
| 2. Space Age | turn 45 | 2004 | Orbital | 15 | 30 |
| 3. Interplanetary | turn 105 | 2064 | Interplanetary | 15 | 24 |
| 4. Fusion | turn 175 | 2134 | Interplanetary | 14 | 22 |
| 5. Transfer | turn 250 | 2209 | Sustained transfer | 14 | 17 |
| 6. Deep Space | turn 330 | 2289 | Deep space | 13 | 20 |
| 7. Stellar | turn 410 | 2369 | Deep space | 11 | 13 |
Turns are for a steady player on standard pace. Rushing research can put you about 30 turns ahead; neglecting it can leave you 60 behind.
1. Atomic ≈ 1960
Barracks
Cistern
City
City district
Clinic
Coal plant
Dig Site
Farm
Fishery
Granary
Hydro dam
Ice harvester
Iron mine
Library
Lumber camp
Market
Militia post
Park
Quarry
Ranch
Roadbed
Rubble
Supply depot
Uranium pit
Walls
Warehouse
Waystation
Well
Wind farm
Workshop
Armoured Car
Engineer
Field Artillery
Militia
Prospector
Rifles
Settler
Work Crew2. Space Age ≈ 2004
Bank
Causeway
Desalination plant
Factory
Fission reactor
Housing block
Hydroponics bay
Laboratory
Landing site
Launch pad
Lithium flats
Orbital station
Planetary administration
Rail yard
Smelter
Solar field
Stadium
Sulphur works
Trade house
Transport hub
Treasury
Crew Capsule
Envoy
Hardsuit Infantry
Interceptor
Main Battle Tank
Orbital Rocket
Sounding Rocket
Survey Probe3. Interplanetary ≈ 2064
Alloy depot
Arsenal
Atmospheric condenser
Broadcast hub
Deep shaft
Foundry
Geothermal tap
Grid Buffer
Landing pad
Life support plant
Orbital Elevator
Regolith sinter
Research campus
Spaceport
Strategic vault
Suborbital pad
World Congress Hall
Colony Ship
Corvette
Frigate
Hover Tank
Lander
Orbital Tug
Rocket Artillery4. Fusion ≈ 2134
Financial Centre
Fusion plant
Gas skimmer
Great Archive
Habitat tower
Helios Array
Institute of Physics
Mass driver
Missile silo
Ring miner
Robotics plant
Uranium enrichment
Vertical farm
Bomber Wing
Crew Transport
Destroyer
Freighter
Missile Cutter
Powered Infantry
Salvager
Troop Transport5. Transfer ≈ 2209
Aquifer tap
Cryo silo
Fusion Research Complex
Maglev loop
Nanoforge
Orbital dock
Orbital ring
Plasma refinery
Terraforming Engine
Cruiser
Escort Carrier
Grav Lancer
Heavy Freighter
Science Vessel
Siege Walker
Terraformer6. Deep Space ≈ 2289
Arcology
Dark Matter Collector
Dark matter well
Deep Space Observatory
Deep-space array
Deep-space collector
Dyson Scaffold
Interplanetary Exchange
Memorial spire
Orbital tether
Planetary shield
Plasma Forge
Recycler
Vat protein plant
Ark
Assault Mech
Battleship
Fleet Carrier
Siege Monitor
Void Hauler
Antimatter core
Consent engine
Eternity Vault
Exotic mill
Field anchor
Ringworks yard
Singularity Core
Singularity press
Stellar Cartography Array
Stellar Foundry
Dreadnought
Plasma Battery
Titan Mech