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
It should be noted that planets and large moons have 3 different "quality zones" while moons only have one. These zones are N-S strips of land that will have different types of vegetation, and different abundance and quality for their resources.
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
The population limit of a world depends on its diameter. The population limit is for each resource zone rather than the entire planet. This means that a planet with more than one resource zone can support up to the population limit in each recourse zone. The population of all cities in the in the same resource zone is added together when checking against the limit.
If this number of citizens is reached, all the cities in the resource zone will start getting morale penalties from overpopulation (-1 for every 5% additional population) and increased risk of disease.
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
| Diameter | Resource Zone Population Limit |
|---|---|
| 1800 | 100 |
| 3800 | 200 |
| 5600 | 300 |
| 7600 | 400 |
| 9400 | 500 |
| 11400 | 600 |
| 15200 | 800 |
| 17000 | 900 |
| 19000 | 1000 |
| 20800 | 1100 |
| 22800 | 1200 |
| Ringworld | 1000 |
The formula for zone population limit is: PopulationLimit = 100 * FLOOR( PlanetDiameter / 1'800 )