Fields

Fields represent the space available on a planet for buildings. Every level of a building you construct uses one field. The Terraformer can be used to increase the max fields of a planet.

As a general rule all home planets have a variation of 150 to 190 fields (regardless of position). It is favorable on the long-term to colonize planets of 200+ fields, usually found among slots 7, 8 or 9.

Defense structures do not use up fields on planets or moons.