Building reference
Press U for the underground view, where the city's pipes, sewers, fibre and subway run beneath the streets.
Underground networks can run beneath anything: streets, buildings and parks. That makes them the way to link a site that sits away from the streets, and the subway the way to move commuters without fighting surface traffic. Sewage only becomes a concern as the city grows past what septic tanks can treat.
| Building | Cost | Upkeep / day | Unlocks |
|---|---|---|---|
| Subway tunnel | $90 per tile | $0.12 | 06 · Opportunity for everyone |
| Sewer | $14 per tile | $0.02 | From the start |
| Treatment plant | $640 | $4.2 | 03 · More than houses |
| Water pipe | $10 per tile | $0.02 | From the start |
| Fibre cable | $18 per tile | $0.03 | 02 · Keep the lights on |
A bored metro tunnel, one section per tile. Route it beneath anything to join subway stations into a network.
Joins subway stations · runs under anything
A buried sewer that links a treatment plant, or a site away from the streets, to the sewer mains every street carries. Route it beneath streets and buildings from the underground view.
Joins a plant or site to the sewer network · +190 sewage distribution · runs under anything
Treats the wastewater of the sewer network it touches, beyond the 450 septic tanks handle: set it beside a street or link it with sewers. Built by a crew over about 10 days; it opens when done.
+1,500 sewage treatment to its network
Also in this menu: Water pipe.
Also in this menu: Fibre cable.
Figures are the game's base prices. Upkeep is charged every in-game day, and construction bills are drawn from the city's stock of materials, steel, copper wire and timber (see farms and trade).