Domes

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 and 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 and will require 50% less 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	3 large 1 medium	40 concrete 30 metals	5 power 0.5 oxygen 0.5 water	1 concrete	Available from start	The most economical Dome design providing extremely limited habitable space and no capacity to host a Spire.
Basic	6 large 1 spire	80 concrete 20 metals 10 polymers	15 power 1 oxygen 1 water	1 concrete	Available from start	A small Dome suitable for the early days of the Colony.
Barrel	8 large 2 medium	50 concrete 20 metals 20 polymers	15 power 1 oxygen 1 water	1 polymers	Available from start	An alternative small Dome configuration providing more space but lacks a slot for a Spire.
Trigon	9 large 1 spire	100 concrete 50 metals 15 polymers	20 power 1.5 oxygen 1.5 water	1.5 polymers	Low-G Engineering	An alternative medium Dome configuration. Cheaper, but provides less habitable space.
Medium	12 large 3 small 1 spire	120 concrete 50 metals 20 polymers	30 power 2 oxygen 2 water	2 polymers	Low-G Engineering	A medium-sized Dome design.
Mega Trigon	12 large 3 medium 3 small 1 spire	150 concrete 100 metals 60 polymers	30 power 2.5 oxygen 2.5 water	2.5 polymers	Gravity Engineering	An alternative Mega Dome configuration. Cheaper, but provides less habitable space.
Mega	24 large 1 spire	300 concrete 200 metals 100 polymers	50 power 4 oxygen 4 water	5 polymers	Gravity Engineering	The most advanced and spacious Dome design.
Oval	14 large 2 spire	150 concrete 150 metals 100 polymers	40 power 2 oxygen 2 water	4 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	14 large 2 medium 4 small 2 spire	100 concrete 150 metals 150 polymers	40 power 2 oxygen 2 water	4 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	18 large 1 spire	400 concrete 200 metals 300 polymers	40 power 10 water	3 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.
Capital City	51 large 18 small 3 spires	150 concrete 150 metals	100 power 10 water	10 concrete	95% Atmosphere 50% 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]

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 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 consumption by 1 until it is repaired and requires 5 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 built once. It has the following stats:

Cost: 150 Concrete, 150 Metal
Consumption: 100 Power, 10 Water
Maintenance: 10 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.