- Obvious one first: focus your city on production!
Aim to build other cities' Industrial Zones within 6 tiles of your main production city's city center, to benefit from their Power Plant bonus
Note that since the Winter 2016 patch, factories no longer stack:
Cities can no longer receive yields from more than one regional
building per type; they take the highest (ex. production from multiple
- Ruhr Valley (+30% production, and +1 Production for each Mine and Quarry in this city. Must be built along a River adjacent to an Industrial Zone district with a Factory).
- Base trade routes from this city, prioritizing production
- Until you get Ecommerce (see below), domestic trade will probably generate more production than international
- Sergei Korolev (Great Engineer) grants 1,500 production towards Space Race project construction
- Carl Sagan (Great Scientist) grants 3,000 production towards Space Race project construction - enough to one-shot a Mars component
- Chop woods belonging to your production city to grant 200 production (or jungle for 100 production/100 food). Then replant woods and create Lumber Mills (note that you can't chop rebuilt woods).
- Chopping woods for production can be done more than 3 tiles from your city, providing the production city is the closest of your cities to the wood.
- Build mines on any unoccupied hills, especially next to the Industrial Zone
- Remember that mines will still provide an adjacency bonus to your Industrial Zone even if the mine itself is 4 tiles from your city.
- Consider switching to Communism for the 10% production bonus
- Integrated Space Cell (+15% production towards Space Race Projects if a city has either a Military Academy or a Seaport).
- Ecommerce (+5 production and +10 gold from international Trade Routes)
- Arsenal of Democracy (Your Trade Routes to an Ally's city provide +2 Food and +2 Production for both cities)
- Five-Year Plan (+100% Campus and Industrial Zone district adjacency bonuses)
- Prioritize getting suzerainty of Industrial cities