When all volcanic activity on a Class A planet ceases, it is considered Class C.Essentially dead, these small worlds have cold, barren surfaces and possess no geological activity and little to no atmosphere.
- Extreme attrition damage to units outside Pressure Domed Cities.
- No Water for Naval Units
- No Water for Fishery or Waterport
- Little to no Atmosphere for Air Units or Airport.
- All facilities require Pressure Dome Upgrade or suffer damage.