Description
Closed-Cycle Habitats recycles air, water, nutrients, and heat so small settlements can survive unreliable supply. Open marginal systems early, then turn fragile settlements into durable and populous worlds. Unlocks Habitat Restoration projects in owned systems.
Benefits
Housing capacity Empire-wide+2%
Class F systems Colonization access
Habitat Restoration Terraforming project
Strategy notes
Closed-Cycle Habitats develops the Terraforming discipline within Expansion and Terraforming. Open marginal systems early, then turn fragile settlements into durable and populous worlds. Its immediate value is +2% housing capacity. The principal counterpressure is that planetary programs mature slowly and expose expensive frontier infrastructure before it can defend itself.
Player hints
This is an inexpensive path entry. Research it early when you want to test this direction without sacrificing strategic flexibility. Favor this technology when its Terraforming benefits reinforce your current economy, fleets, or frontier. Pause the branch if its expected RP per tick is too diluted or its resource costs would stall higher-priority projects. Open a system’s Terraforming window to begin Habitat Restoration.