World

A world is the name generally given to celestial bodies, such as planets and their moons.

World Types

There are several sets of properties of worlds, that are orthogonal to each other. The main, and most influential property is the solar zone in which the world located. There are five zones:

• Inferno worlds orbit closest to the system's sun and can be gaseous, seas of lava or barren desert-like plains. Magmex, ioplasma, vulcanite, and phlogiston are found only on these worlds.

• Inner worlds orbit between the inferno and habitable zones. These worlds can support primitive plant and animal life, but they are too warm to support intelligent life. Terrain and resources on inner planets are very similar to terrain and resources on habitable planets. Inner planets are breathable if the atmosphere is standard or tainted with a density between 15%-85%.

• Habitable worlds are always habitable without additional life support, and are the easiest to reach self-sufficiency. Homeworlds are always habitable worlds. A wide range of basic resources are found here as well as plant and animal life. They are comprised of land and seas of water. Each habitable zone is able to produce 1 officer.

• Outer worlds function like inner planets, but they are too cold for intelligent life instead. However chances of ice and lumenite are much higher than for warmer worlds.

• Frigid worlds are icy planets which cannot support life. They can be barren snow plains or may have seas of liquid gases which are highly damaging to life and equipment. Cryozine, bolite, myrathane and polytaride are found only on these worlds.

Celestial Bodies Types

There are also different types of planetary bodies:

• Gas Giants have a massive atmosphere, that heavily damages all ships and virtually prevents colonization. They often have moons and can have large moons.

• Planets have atmospheres and surface liquids (lava, water or supercooled liquid depending on their orbital zone), and are able to support large populations. Planets can have small airless moons.

• Large Moons are basically planets orbiting a gas giant.

• Moons are smaller and have no atmospheres nor surface liquids. They have a higher chance of containing eludium and lumenite, but will be easily overpopulated. They are found orbiting gas giants and planets.

• Ringworlds are rare artificial worlds which surround a star. The worlds are the same as habitable worlds but are contained within a trough facing inwards to the star, a second orbital layer of plating artificially replicates a day and night cycle.

• Asteroid Rings - Many worlds have asteroid rings surrounding them. Various materials, such as ice and stone, can be harvested from these using a prospector bay at TL 2.

Resource Zones

Resource zones as seen from the north pole of a planet.

Planets and ringworld arcs are divided into one or more resource zones, like an orange divided into equal slices. The map on the Locator (F7) window displays longitude lines at the divisions between the resource zones.

Most planetary resources are distributed into resource zones. Resource quality and abundance varies by zone. A resource that is rare in one zone may be plentiful in another zone. Similarly, a resource that is poor in one zone may be superb in another zone.

Atmospheric and hydrographic factors do not vary by zone. The quality and quantity of these commodities is the same across the entire world.

The only visible change from one zone to the next is the appearance of the plant life. Otherwise, you must spot the terrain to watch for a change in resource quality to notice that you are in a different zone.

The zone changes go as following:

• Zone 1: 180°W-60°W
• Zone 2: 60°W-60°E
• Zone 3: 60°E-180°E

Ringworlds however only have 2 resource zones:

• Zone 1: 180°W-0°W
• Zone 2: 0°E-180°E

World Population

Citizens experience dissatisfaction due to population pressure when the resource zone population limit is exceeded. Population of a resource zone is the sum of the population of all cities whose town square resides in the zone, even though portions of cities may overlap multiple resource zones. Citizens become increasingly unhappy the more the population exceeds the limit. Overpopulation affects morale of citizens (-1 for every 5% additional population) and increased risk of disease outbreaks.

The diameter of a world can be found:

• On a city report from a city on the planet
• On a system survey report
• On sensor details

World Diameter	Resource Zones	Resource Zone Population Limit
1800	1	100
3800	1	200
5600	3	300
7600	3	400
9400	3	500
11400	3	600
15200	3	800
17000	3	900
19000	3	1000
20800	3	1100
22800	3	1200
Ringworld	2	1000

The formula for zone population limit is: PopulationLimit = 100 * FLOOR( PlanetDiameter / 1'800 )

Indigenous People

Worlds have an indigenous population if they have a habitable environment and they orbit in the habitable orbit zone.

The DNA of the indigenous people is the same across the entire world, regardless of the number of resource zones. The indigenous DNA is set as follows.

• The first avatar to plant a flag on a world establishes its indigenous DNA to be the same as their own personal DNA.

• The indigenous DNA of the homeworld of a new emperor matches the new emperor immediately. It cannot be changed by a chance discovery by another avatar before the new emperor plants their flag.

• Detonation of a genesis device changes the indigenous DNA of a world.