Domes

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Domes are at the heart of the colony, where colonists satisfy all their needs. As such, each dome requires Power, Water and Oxygen in order to be habitable. Each dome has a number of large plots and medium plots. The large plot has enough place for either one large building or 3 medium buildings and a small one. The medium plot has enough space for a medium building or 3 small ones. Most domes also have room for one or two central spires.

A Self-Sufficient Dome construction option is available for the early days of a colony, placing a Basic Dome as well as Oxygen.png Oxygen and Water.png Water production and storage buildings. The International Mars Mission Sponsor starts with one as a prefab.

Policy

The player can set the policy regarding the inhabiting colonists for each dome individually. This policy refers to the people living there, not working or visiting for services.

Dome Sizes

In Green Planet if Mars becomes habitable Domes will no longer need Oxygen.png Oxygen and will require 50% less Power.png Power and construction materials. In addition an option will be added to open the dome, removing the glass and replacing the frames with trees.

Dome Plots Construction cost Consumption Maintenance Requiremed technology Description
S M L Spire Concrete.png Metals.png Polymers.png Power.png Oxygen.png Water.png
Micro dome.png Micro 0 1 3 0 40 30 0 5 0.5 0.5 1 Concrete.png concrete The most economical Dome design providing extremely limited habitable space and no capacity to host a Spire.
Dome.png Basic 0 0 6 1 80 20 10 15 1 1 1 Concrete.png concrete A small Dome suitable for the early days of the Colony.
Hexa dome.png Barrel 0 2 8 0 50 20 20 15 1 1 1 Polymers.png polymers An alternative small Dome configuration providing more space but lacks a slot for a Spire.
Trigon dome.png Trigon 0 0 9 1 100 50 15 20 1.5 1.5 1.5 Polymers.png polymers Technology - Low-G Engineering.png Low-G Engineering An alternative medium Dome configuration. Cheaper, but provides less habitable space.
Oval dome.png Medium 3 0 12 1 120 50 20 30 2 2 2 Polymers.png polymers Technology - Low-G Engineering.png Low-G Engineering A medium-sized Dome design.
Mega trigon dome.png Mega Trigon 3 3 12 1 150 100 60 30 2.5 2.5 2.5 Polymers.png polymers Technology - Gravity Engineering.png Gravity Engineering An alternative Mega Dome configuration. Cheaper, but provides less habitable space.
Mega dome.png Mega 0 0 24 1 300 200 100 50 4 4 5 Polymers.png polymers Technology - Gravity Engineering.png Gravity Engineering The most advanced and spacious Dome design.
Polymer dome.png Oval 0 0 14 2 150 150 100 40 2 2 4 Polymers.png polymers Technology - Multispiral Architecture.png Multispiral Architecture An elongated Dome design which has space for two Spires.
Diamond dome.png Diamond 4 2 14 2 100 150 150 40 2 2 4 Polymers.png polymers Technology - Multispiral Architecture.png Gem Architecture A diamond shaped Dome which has space for two Spires.
Geoscape dome.png Geoscape 0 0 18 1 400 200 300 40 0 10 3 Polymers.png polymers Technology - Localized Terraforming.png Localized Terraforming A slice of Earth on Mars, this Dome increases the Comfort of all Residences within. It also increases the Sanity of its inhabitants every Sol.
Comfort (all residences): +25
The Geoscape is a Wonder and thus limited to 1 per colony.

Underground Domes

Underground Domes can only be constructed underground.

Dome Plots Construction cost Consumption Maintenance Requiremed technology Description
S M L Spire Concrete.png Metals.png ExoticMinerals.png Power.png Oxygen.png Water.png
Underground micro dome.png Micro 0 1 3 0 40 0 20 7.5 2 2 2 Metals.png metals Underground Dome Construction The most economical Dome designed specifically for subsurface environments. It provides extremely limited habitable space and no capacity to host a Spire.
Underground dome.png Basic 0 0 6 0 60 15 40 20 2 2 4 Metals.png metals Underground Dome Construction A small reinforced Dome that is only suitable for subsurface environments.
Underground dome medium.png Medium 3 0 12 1 80 30 80 40 10 10 3 ExoticMinerals.png exotic minerals Underground Medium Dome A large reinforced Dome that is only suitable for subsurface environments.

Passages

Building - Passage.png Passages connect two Domes together and allow colonists living in one to work or use facilities within the other. Domes connected by Passages will have a unified power and life support grid but if there is not enough supply for a Dome for more than a Sol all Passages leading to it will be closed. Colonists will only seek work and services in Domes immediately connected to their home dome and will not traverse more than one passage except when migrating to a new dome. Passages block drone routes unless a Building - Passage Ramp.png Ramp is built over them. Passage length is limited to 14 hexes (Dome outer edge to Dome outer edge).

Work performance of a colonist is reduced by -10 when not working in home Dome. Services are less effective when they are not in the colonists' home Dome. The Brazil mission sponsor does not have these penalties.

Fractures

Each time a Dome is hit by a Meteor it will receive a fracture. Each fracture increases the Oxygen.png Oxygen consumption by 1 until it is repaired and requires 5 Polymers.png Polymers to repair regardless of Dome size. Fractures can also be created by certain Story Bits.

Capital City

Capital City

The Capital City is available only if the Green Planet DLC is installed and requires 95% Atmosphere and 50% Temperature terraforming. If Atmosphere drops below 95% the colonists will start to suffocate. As with wonders, the Capital City can only be built once. It has the following stats:

  • Cost: 150 Concrete.png Concrete, 150 Metals.png Metal
  • Consumption: 100 Power.png Power, 10 Water.png Water
  • Maintenance: 10 Concrete.png Concrete
  • Plots: 51 Large, 18 Small, 3 Spire

Dome Skins

There are a few different skins that may be used on the Domes to allow for some variation in style. These skins are purely cosmetic, and have no effect other than appearance.

All Domes except the Geoscape Wonder have two available skins. A third one is included in the Colony Design Set DLC. A fourth skin is exclusive to round Domes and available to players who pre-ordered the game or purchased the Stellaris Dome Set cosmetic DLC.

Any skin on any building or dome that has one, can be changed before the building is place for construction and after is constructed. This can be done by using the hotkeys shown in the UI or the brush icon next to the rename icon in the UI when you have selected the building/decoration/Dome.

Game concepts