Tech Level: 13
Cost: 200mc + 100 Supply Units
Maintenance: 2 Food
Requires: 100000 Colonists
Limit Per Planet: No Limit
A good source of consistent income.
Colonists in an under city can not be harmed by orbital attacks.
Under cities are underground completely shielded cities. In order for an under city to produce a 80 mc income per turn each under city needs two units of food. Under cities increase your colonist`s happiness and increase their rate of population growth.