Manual:Game Mechanics/Infrastructure

Infrastructure represents a world's population as a whole, as well as their general ability to operate and support the construction of new structures. At the start of each player's turn, the infrastructure of each of their worlds is increased by 1 assuming it isn't already at the cap. Some building structures require a minimum amount of Infrastructure to be constructed. It also has an impact on the amount of time it takes to occupy and conquer the world. A world's starting infrastructure cap is equal to twice its fertility.