Biosphere

Class Type Description
I Garden A mix of land and water geology, this planet type is easy to inhabit.
I Jungle Dense with vegetation, this planet type can support a large population but may feature hostile flora or fauna.
I Ocean Primarily or entirely covered by water, this planet type is rich in life and resources, it just requires creative city building.
II Arid Relatively dry, this planet type is still somewhat comfortable for development.
II Tundra Though partially covered in ice and snow, this planet is still relatively easy to develop.
III Desert Waterless surface. Tough living with minimal flora and fauna.
III Arctic Frozen surface. Tough living with minimal flora and fauna.
IV Volcanic Tectonically active surface makes development here a challenge in extreme engineering.
IV Runaway Greenhouse A Garden World gone hot and corrosive. Lifeless and hostile.
IV Barren Lacking both water and atmosphere. Lifeless.
V Asteroids Extremely difficult to colonize without pretech.
V Gas Giant Extremely difficult to colonize without pretech.

Biosphere

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