Also known as Uranian planets, these gaseous giants have vastly different compositions from other giant worlds; the core is mostly rock and ice surrounded by a tenuous layers of methane, water, and ammonia. Additionally, the magnetic field is sharply inclined to the axis of rotation. Class I planets typically form on the fringe of a star system.

Class I Planet type

Game Notes:

  • 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 50% 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.