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.

Dome Sizes[edit]

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 Requirements Description
Micro
Micro dome.png
3 large
1 medium 
40Concrete.png concrete
30Metals.png metals
5Power.png power
0.5Oxygen.png oxygen
0.5Water.png water
1Concrete.png concrete Available from start The most economical Dome design providing extremely limited habitable space and no capacity to host a Spire.
Basic
Dome.png
6 large
1 spire
80Concrete.png concrete
20Metals.png metals
10Polymers.png polymers
15Power.png power
1Oxygen.png oxygen
1Water.png water
1Concrete.png concrete Available from start A small Dome suitable for the early days of the Colony.
Barrel
Hexa dome.png
8 large
2 medium
50Concrete.png concrete
20Metals.png metals
20Polymers.png polymers
15Power.png power
1Oxygen.png oxygen
1Water.png water
1Polymers.png polymers Available from start An alternative small Dome configuration providing more space but lacks a slot for a Spire.
Trigon
Trigon dome.png
9 large
1 spire
100Concrete.png concrete
50Metals.png metals
15Polymers.png polymers
20Power.png power
1.5Oxygen.png oxygen
1.5Water.png water
1.5Polymers.png polymers Technology - Low-G Engineering.png
Low-G Engineering
An alternative medium Dome configuration. Cheaper, but provides less habitable space.
Medium
Oval dome.png
12 large
3 small
1 spire
120Concrete.png concrete
50Metals.png metals
20Polymers.png polymers
30Power.png power
2Oxygen.png oxygen
2Water.png water
2Polymers.png polymers Technology - Low-G Engineering.png
Low-G Engineering
A medium-sized Dome design.
Mega Trigon
Mega trigon dome.png
12 large
3 medium
3 small
1 spire
150Concrete.png concrete
100Metals.png metals
60Polymers.png polymers
30Power.png power
2.5Oxygen.png oxygen
2.5Water.png water
2.5Polymers.png polymers Technology - Gravity Engineering.png
Gravity Engineering
An alternative Mega Dome configuration. Cheaper, but provides less habitable space.
Mega
Mega dome.png
24 large
1 spire
300Concrete.png concrete
200Metals.png metals
100Polymers.png polymers
50Power.png power
4Oxygen.png oxygen
4Water.png water
5Polymers.png polymers Technology - Gravity Engineering.png
Gravity Engineering
The most advanced and spacious Dome design.
Oval
Polymer dome.png
14 large
2 spire
150Concrete.png concrete
150Metals.png metals
100Polymers.png polymers
40Power.png power
2Oxygen.png oxygen
2Water.png water
4Polymers.png polymers Technology - Multispiral Architecture.png
Multispiral Architecture
An elongated Dome design which has space for two Spires.
"Multispiral Architecture" is a breakthrough technology, and as such is not always available.
Diamond
Diamond dome.png
14 large
2 medium
4 small
2 spire
100Concrete.png concrete
150Metals.png metals
150Polymers.png polymers
40Power.png power
2Oxygen.png oxygen
2Water.png water
4Polymers.png polymers Technology - Multispiral Architecture.png
Gem Architecture
A diamond shaped Dome which has space for two Spires.
"Gem Architecture" is a breakthrough technology, and as such is not always available.
Geoscape
Geoscape dome.png
18 large
1 spire
400Concrete.png concrete
200Metals.png metals
300Polymers.png polymers
40Power.png power
10Water.png water
3Polymers.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. Geoscape Domes, though smaller than a mega dome, provide all inhabitants with +25 sanity every Sol. The dome is a Wonder and thus limited to 1 per colony.
Capital City
Capital City.png
51 large
18 small
3 spires
150Concrete.png concrete
150Metals.png metals
100Power.png power
10Water.png water
10Concrete.png concrete 95%Atmosphere.png Atmosphere
50%Temperature.png Temperature
Green Planet DLC
The largest city on the planet and entirely open air - a bold monument to the epic success story that is the Terraforming of Mars.
The Capital City is a Wonder and thus limited to 1 per colony.

Passages[edit]

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.

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.

In Green Planet if Mars becomes habitable passages are no longer required as Colonists can walk to nearby Domes.

Fractures[edit]

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[edit]

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 build 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[edit]

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 affect 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