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 Required Tech Description
Micro
Micro dome.png
3 large
1 medium 
40 Concrete.png concrete
30 Metals.png metals
5 Power.png power
0.5 Oxygen.png oxygen
0.5 Water.png water
1 Concrete.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
80 Concrete.png concrete
20 Metals.png metals
10 Polymers.png polymers
15 Power.png power
1 Oxygen.png oxygen
1 Water.png water
1 Concrete.png concrete Available from start A small Dome suitable for the early days of the Colony.
Barrel
Hexa dome.png
8 large
2 medium
50 Concrete.png concrete
20 Metals.png metals
20 Polymers.png polymers
15 Power.png power
1 Oxygen.png oxygen
1 Water.png water
1 Polymers.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
100 Concrete.png concrete
50 Metals.png metals
15 Polymers.png polymers
20 Power.png power
1.5 Oxygen.png oxygen
1.5 Water.png water
1.5 Polymers.png polymers Low-G Engineering An alternative medium Dome configuration. Cheaper, but provides less habitable space.
Medium
Oval dome.png
12 large
3 small
1 spire
120 Concrete.png concrete
50 Metals.png metals
20 Polymers.png polymers
30 Power.png power
2 Oxygen.png oxygen
2 Water.png water
2 Polymers.png polymers Low-G Engineering A medium-sized Dome design.
Mega Trigon
Mega trigon dome.png
12 large
3 medium
3 small
1 spire
150 Concrete.png concrete
100 Metals.png metals
60 Polymers.png polymers
30 Power.png power
2.5 Oxygen.png oxygen
2.5 Water.png water
2.5 Polymers.png polymers Gravity Engineering An alternative Mega Dome configuration. Cheaper, but provides less habitable space.
Mega
Mega dome.png
24 large
1 spire
300 Concrete.png concrete
200 Metals.png metals
100 Polymers.png polymers
50 Power.png power
4 Oxygen.png oxygen
4 Water.png water
5 Polymers.png polymers Gravity Engineering The most advanced and spacious Dome design.
Oval
Polymer dome.png
14 large
2 spire
150 Concrete.png concrete
150 Metals.png metals
100 Polymers.png polymers
40 Power.png power
2 Oxygen.png oxygen
2 Water.png water
4 Polymers.png polymers 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
100 Concrete.png concrete
150 Metals.png metals
150 Polymers.png polymers
40 Power.png power
2 Oxygen.png oxygen
2 Water.png water
4 Polymers.png polymers 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
400 Concrete.png concrete
200 Metals.png metals
300 Polymers.png polymers
40 Power.png power
10 Water.png water
3 Polymers.png polymers 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.

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.

Work performance and service comfort for residents using a connected Dome is slightly lower, so it is more optimal for a Colonist to use workplaces and services in its own Dome. In Space race the Brazil sponsor avoids this penalty.

Passages block drone routes unless a Building - Passage Ramp.png Ramp is built over them.

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: 50 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.

Game concepts