These GeoCistern have the ability to lower the cm of water of the body it is on. While being quite slow, it has the advantage of not altering one of the other terraforming statistics. Levels beyond V are only reached through events.
"The simplest way to get rid of water is simply to lock it away. Of course, this is easier said than done when faced with entire oceans worth of excess water. Luckily, recent advances in asteroid mining are allowing us to hollow out and reinforce colossal spaces deep under the planet's crust, where vast expanses of water can be stored safely and securely, away from the surface hydrosphere. " - Ingame Description
Beginner Mode differs in time needed compared to Normal Mode. The Culture modifiers accounts to the total Biomass, Population, Credits, Research Time and/or Construction Time gained/lost for the buildings/research.
Normal & Expert Mode