Aside from their immense size, Class S planets are very similar to their Class Jcounterparts, with liquid metallic hydrogen cores surrounded by a hydrogen and helium atmosphere.
- Extreme attrition damage to units outside Pressure Domed facilities.
- Due to nature of surface, ground combat on surface is impossible (100% attrition to units forced to land on planet)
- No Water for Naval Units
- No Water for Fishery or Waterport
- Extreme Atmosphere, Air Units only 25% effective.
- Facilities can not function here unless they have the Repulsorlift Upgrade, immediately destroyed on surface.
- Facilities can not function here unless they have the Pressure Dome Upgrade, or suffer damage.
- Facilities can not be constructed here, they must be transported here.
- Mines do no produce anything.
- Gas Mine produce x2 Energy.
- Extreme Weather Events.