The economy in Galactic Civilization 4 is based around the 5 primary planetary inputs minerals, technology, wealth, farming and culture. These inputs are produced by and fed into core worlds. They are then turned into manufacturing, research, gross income, food, and influence outputs. A major part of the game is developing your economy to get the most out of these resources.
|Planetary Inputs are the raw resources for your economy. They will determine how effective a colony will be at producing its associated output. Colonies will send their planetary inputs to their sponsored core world, but some will be lost due to supply attrition. The table below details each of the inputs, where it's typically found and the output it is paired with.
|Citizens, Districts, and Improvements process the planetary inputs and convert them to Planetary Outputs. These outputs are Manufacturing, Research, Income, Food, Influence, Military and Tourism. Manufacturing, Military, and Influence are local outputs meaning they provide an immediate bonus to the core world itself. Research, Food, Tourism, and Income are global outputs which means their benefits apply to your entire civilization. Citizen's specialization, districts, and improvements that increases global outputs should be built on any core world with suitable planetary input. Local outputs on the other hand should be specialized as much as possible to maximize them on their preferred core world.
For instance, if the goal were to specialize your civilization for maximum production, a player could take the following three actions:
- Train one of their citizen as a worker.
- Build a manufacturing district.
- Build a manufacturing improvement.