Civilization · City Improvements
Mass Transit
Environment
Eliminates population pollution.
What it does
Eliminates the pollution caused by the city's population.
Key details
- Cost
- 160
- Upkeep
- 4
- Requires
- Mass Production
Where it comes from
- Unlocked by
Mass Production
About city improvements in Civilization
City improvements are buildings constructed with production shields, each paying gold maintenance every turn. Most affect only their own city — which is why deciding what NOT to build everywhere is the real economic skill.
Strategy — Maintenance compounds: a Temple in every city is fine, a Colosseum in every city will bankrupt an early empire. Build to need, sell what you outgrow.
