Z City Center Yields
City centers slightly improved in each era:
- Ancient Era (4000 BC) – no bonus.
- Classical Era (1600 BC) – +1 production.
- Medieval Era (120 ~ 200 AD) – +1 production, +1 faith.
- Renaissance Era (1100 ~ 1200) – +1 food.
- Industrial Era (1625 ~ 1675) – +2 production.
- Modern Era (1840 ~ 1860) – +1 housing.
- Atomic Era (1920 ~ 1950) – +1 food, +1 production.
- Information Era (1960 ~ 2000) – +1 amenity.
- Future Era GS-Only (2020 ~ 2050) – +1 food, +1 production.
Tested only on GS so it might not work if you have no GS DLC.