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[[Category: Traveller]] | [[Category: Traveller]] | ||
− | The | + | The RktkT Complicated Star System Generator is a detailed, but not ''too'' detailed, random star system and world generation system for Mongoose Traveller. It attempts to walk that fine line between realistic (as based on current astronomical and planetological research) and easy to use. Drawn from a number of sources, including the core rules, ''GURPS Space'' (for 4th edition), ''GURPS Traveller: First In'', various idea seeds on the [http://traveller.wikia.com/wiki/Traveller_Mailing_List Traveller Mailing List] and [http://www.travellerrpg.com/CotI/Discuss/ Citizens of the Imperium fora], and the [http://arcbuilder.home.bresnan.net/PCLMaster.html Arc Builder Planetary Classification List]. |
This is a "bottom up" system, where you start with the primary star and work through all the planetary orbits. However, a lot of the process has been greatly simplified and fudged, mainly so you don't have to go crazy calculating the molecular weight of the atmosphere and the effects of axial tilt, but also to make it easier to update the system when new scientific discoveries make it outdated. The end results are all in the conventional UPP format, with the addition of a single new rating, '''Biosphere''', to describe the complexity of life on the world. | This is a "bottom up" system, where you start with the primary star and work through all the planetary orbits. However, a lot of the process has been greatly simplified and fudged, mainly so you don't have to go crazy calculating the molecular weight of the atmosphere and the effects of axial tilt, but also to make it easier to update the system when new scientific discoveries make it outdated. The end results are all in the conventional UPP format, with the addition of a single new rating, '''Biosphere''', to describe the complexity of life on the world. | ||
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I've made the assumption that minor bodies aren't worth mentioning. Assume all systems have a Kuiper belt and Oort cloud, that most Jovians will have their Trojans and Greeks, and that pretty much any planet at all has a number of minor satellites, meteor clouds, etc. Space is big. | I've made the assumption that minor bodies aren't worth mentioning. Assume all systems have a Kuiper belt and Oort cloud, that most Jovians will have their Trojans and Greeks, and that pretty much any planet at all has a number of minor satellites, meteor clouds, etc. Space is big. | ||
− | – Shadowjack | + | – Shadowjack (William) |
== To Do List == | == To Do List == | ||
− | Special Features, internal links for dice tables, descriptive links for planetary and stellar classes, nomenclature/layout sheet | + | Populations and Terraforming, Special Features, internal links for dice tables, descriptive links for planetary and stellar classes, nomenclature/layout sheet |
− | A: B-cdef- | + | A: B-cdef-Gh-jklm N N N P |
:A — Orbit | :A — Orbit | ||
:B — World Type | :B — World Type | ||
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:E — Hydrosphere | :E — Hydrosphere | ||
:F — Biosphere | :F — Biosphere | ||
− | :G — | + | :G — Starport |
− | :H — | + | :H — Bases |
− | :J — | + | :J — Population |
− | :K — | + | :K — Government Type |
− | :L — | + | :L — Law Level |
− | : | + | :M — Industrial Base |
:N — World & Trade Codes | :N — World & Trade Codes | ||
:P — Travel Code | :P — Travel Code | ||
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Playtesting Notes: | Playtesting Notes: | ||
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9 June 2008: Still working on the population rules. A high stellar society like the Imperium turns out a ''lot'' of small outposts, which is mildly surprising, but does seem reasonable. Need a more elegant approach to terraforming; maybe this will work… | 9 June 2008: Still working on the population rules. A high stellar society like the Imperium turns out a ''lot'' of small outposts, which is mildly surprising, but does seem reasonable. Need a more elegant approach to terraforming; maybe this will work… | ||
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'''Inner Zone orbits:''' 1d6-1. '''DMs:''' M-V star -1. If Close Companion present, automatically 0. | '''Inner Zone orbits:''' 1d6-1. '''DMs:''' M-V star -1. If Close Companion present, automatically 0. | ||
:''Type L star:'' instead roll 1d3-1. | :''Type L star:'' instead roll 1d3-1. | ||
− | '''Outer Zone orbits:''' 1d6-1. '''DMs:''' M-V | + | '''Outer Zone orbits:''' 1d6-1. '''DMs:''' M-V star -1. If Moderate Companion present, automatically 0. |
=== Orbit Contents === | === Orbit Contents === | ||
For each planetary orbit, roll 1d6. '''DMs:''' L star -1. | For each planetary orbit, roll 1d6. '''DMs:''' L star -1. | ||
− | : | + | :1 — Asteroid Belt |
:2 — Dwarf Planet | :2 — Dwarf Planet | ||
:3 — Terrestrial Planet | :3 — Terrestrial Planet | ||
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Roll 1d6. '''DMs:''' Asteroid Belt member -1, Helian satellite +1, Jovian satellite +2. | Roll 1d6. '''DMs:''' Asteroid Belt member -1, Helian satellite +1, Jovian satellite +2. | ||
:0 — Rockball | :0 — Rockball | ||
− | :1- | + | :1-3 — Snowball |
− | :5 | + | :4-5 — Rockball |
+ | :6 — Arean | ||
:7 — Meltball | :7 — Meltball | ||
:8 — Roll 1d6: | :8 — Roll 1d6: | ||
− | ::1- | + | ::1-4 — Hebean |
− | :: | + | ::5-6 — Promethean |
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==== Terrestrial Planets ==== | ==== Terrestrial Planets ==== | ||
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::If Age ≥ 4 + modifier, and Atmos A: 1d6+Size-2. | ::If Age ≥ 4 + modifier, and Atmos A: 1d6+Size-2. | ||
::Otherwise: 0. | ::Otherwise: 0. | ||
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==== Arid ==== | ==== Arid ==== | ||
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==== JaniLithic ==== | ==== JaniLithic ==== | ||
''Terrestrial Group, Epistellar Class, JaniLithic Type.''<br/> | ''Terrestrial Group, Epistellar Class, JaniLithic Type.''<br/> | ||
− | <small>These worlds, tide-locked to the primary, are rocky, dry, and | + | <small>These worlds, tide-locked to the primary, are rocky, dry, and geological active.</small> |
:Size: 1d6+4. | :Size: 1d6+4. | ||
:Atmosphere: Roll 1d6. | :Atmosphere: Roll 1d6. | ||
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::::If Age ≥ 1d6: 1d3. | ::::If Age ≥ 1d6: 1d3. | ||
::::If Age ≥ 7: 2d6. '''DMs:''' D star -3. | ::::If Age ≥ 7: 2d6. '''DMs:''' D star -3. | ||
− | + | ::::''Chemistry:'' Roll 1d6. '''DMs:''' L star +1; Epistellar -2; Outer Zone +2. | |
− | ::::''Chemistry:'' | ||
:::::1-3 — Water <small>''[Brammian]''</small> | :::::1-3 — Water <small>''[Brammian]''</small> | ||
:::::4-6 — Ammonia <small>''[Khonsonian]''</small> | :::::4-6 — Ammonia <small>''[Khonsonian]''</small> | ||
+ | ::Otherwise: 0. | ||
==== Meltball ==== | ==== Meltball ==== | ||
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''Small Body Group.''<br/> | ''Small Body Group.''<br/> | ||
<small>These are bodies too small to sustain hydrostatic equilibrium; nearly all asteroids and comets are small bodies.</small> | <small>These are bodies too small to sustain hydrostatic equilibrium; nearly all asteroids and comets are small bodies.</small> | ||
− | :Size: 0 | + | :Size: 0. |
:Atmosphere: 0. | :Atmosphere: 0. | ||
:Hydrosphere: 0. | :Hydrosphere: 0. | ||
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:::1-6 — Roll 2d6. | :::1-6 — Roll 2d6. | ||
::::2-8 — Water (Age modifier +0) <small>''[Gaian]''</small> | ::::2-8 — Water (Age modifier +0) <small>''[Gaian]''</small> | ||
− | ::::9-11 — Sulfur (Age modifier +0) <small>''[ | + | ::::9-11 — Sulfur (Age modifier +0) <small>''[ChloriticGaian]''</small> |
− | ::::12 — Chlorine (Age modifier +0) <small>''[ | + | ::::12 — Chlorine (Age modifier +0) <small>''[ThioGaian]''</small> |
:::7-8 — Ammonia (Age modifier +1) <small>''[Amunian]''</small> | :::7-8 — Ammonia (Age modifier +1) <small>''[Amunian]''</small> | ||
:::9-10 — Methane (Age modifier +3) <small>''[Tartarian]''</small> | :::9-10 — Methane (Age modifier +3) <small>''[Tartarian]''</small> | ||
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:B-E — Helian sizes | :B-E — Helian sizes | ||
:G — Jovian sizes | :G — Jovian sizes | ||
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==== Atmosphere ==== | ==== Atmosphere ==== | ||
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If Biosphere C or more, this is a Homeworld; proceed to the Population tables. | If Biosphere C or more, this is a Homeworld; proceed to the Population tables. | ||
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=== Populations === | === Populations === | ||
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For each such world, add up all the factors which apply: | For each such world, add up all the factors which apply: | ||
*''Dry World'' – Hydro 0: '''-1''' | *''Dry World'' – Hydro 0: '''-1''' | ||
− | *''Extreme Environment'' | + | *''Extreme Environment'' - Size D+; or Atmos C-G; or Hydro F: '''-2''' |
*''Flare Star'' – M-Ve star: '''-1d3''' | *''Flare Star'' – M-Ve star: '''-1d3''' | ||
*''Habitable World'' – Size 1-B, Atmos 2-9, and Hydro 0-B: further detail needed | *''Habitable World'' – Size 1-B, Atmos 2-9, and Hydro 0-B: further detail needed | ||
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**''Poor World'' – Atmos 2-6, and Hydro 0-3: '''+2''' | **''Poor World'' – Atmos 2-6, and Hydro 0-3: '''+2''' | ||
**Otherwise: '''+4''' | **Otherwise: '''+4''' | ||
− | *''High Gravity'' – Size A | + | *''High Gravity'' – Size A-F: '''-1''' |
− | ::''Note: Yes, | + | ::''Note: Yes, Jovians don't count as "high gravity", as one doesn't live on the surface.'' |
− | *''Lifebelt'' – Inner Zone orbit: further | + | *''Lifebelt'' – Inner Zone orbit: further detailed needed |
**Any giant, brown dwarf, or white dwarf: '''+0''' | **Any giant, brown dwarf, or white dwarf: '''+0''' | ||
**M-V star: '''+1''' | **M-V star: '''+1''' | ||
**Any other dwarf or subgiant: '''+2''' | **Any other dwarf or subgiant: '''+2''' | ||
− | *''Tiny World'' – Size 0: '''-1''' | + | *''Tiny World'' – Size 0, but not an Asteroid Belt: '''-1''' |
*''T-Prime Atmosphere'' – Atmos 6 or 8: '''+1''' | *''T-Prime Atmosphere'' – Atmos 6 or 8: '''+1''' | ||
====== Terraforming ====== | ====== Terraforming ====== | ||
− | At Tech Level 10+, any Inner Zone world with Size 1-B and Atmosphere 1-D | + | At Tech Level 10+, any Inner Zone world with Size 1-B and Atmosphere 1-D may be terraformed. For each such world, take (TL+Settlement-15) OR (TL+1d6-15) points, whichever is more. You may add these points to or subtract them from the world's Atmosphere, Hydrosphere, or Biosphere codes, in order to improve their Desirability ratings. |
If you want to introduce Earthly bioforms to a world with alternative biochemistry, you first have to exterminate the existing life by reducing the Biosphere to 2 or less, ''then'' increase it. | If you want to introduce Earthly bioforms to a world with alternative biochemistry, you first have to exterminate the existing life by reducing the Biosphere to 2 or less, ''then'' increase it. | ||
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:Worlds with Atmos B or C and Hydro 2+ cannot be reduced below Atmos B, unless you first reduce them to Hydro 1 or less. After converting the atmosphere, you may add water seas, increasing Hydro normally. | :Worlds with Atmos B or C and Hydro 2+ cannot be reduced below Atmos B, unless you first reduce them to Hydro 1 or less. After converting the atmosphere, you may add water seas, increasing Hydro normally. | ||
:Worlds with native populations cannot be terraformed without genocide – and the natives will resist. Treat population as another code to modify, and reduce it to 1 or less before continuing. | :Worlds with native populations cannot be terraformed without genocide – and the natives will resist. Treat population as another code to modify, and reduce it to 1 or less before continuing. | ||
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==== Habitation ==== | ==== Habitation ==== | ||
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:::If roll ≤ (native TL)-9: 7. | :::If roll ≤ (native TL)-9: 7. | ||
:::Otherwise: Population+2d6-7. | :::Otherwise: Population+2d6-7. | ||
+ | :Law: | ||
+ | ::If Government 0: 0. | ||
+ | ::Otherwise: Government+2d6-7. | ||
+ | :Industry: Population+2d6-7. '''DMs:''' Law 1-3 +1; Law 6-9 -1; Law A-C -2; Law D+ -3. | ||
===== Colony ===== | ===== Colony ===== | ||
− | :Population: TL+Settlement-9, minimum 4, maximum = Desirability+1d3-1d3. | + | :Population: TL+Settlement-9, minimum 4, maximum = Desirability+1d3-1d3+(modifiers for Industrial Base). |
:Government: Population+2d6-7. | :Government: Population+2d6-7. | ||
+ | :Law: | ||
+ | ::If Government 0: 0. | ||
+ | ::Otherwise: Government+2d6-7. | ||
+ | :Industry: Population+2d6-7. '''DMs:''' Law 1-3 +1; Law 6-9 -1; Law A-C -2; Law D+ -3. | ||
− | If the world is habitable (Size 1-B, Atmos 2-9) and has no major pre-existing lifeforms (Biosphere | + | If the world is habitable (Size 1-B, Atmos 2-9) and has no major pre-existing lifeforms (Biosphere 3+), the colonists will seed the world with friendly lifeforms, raising the local Biosphere to 1d6+5. |
===== Outpost ===== | ===== Outpost ===== | ||
:Population: 1d3+Desirability, maximum 4. | :Population: 1d3+Desirability, maximum 4. | ||
::If Population = 0, there is only an automated beacon, listening post, emergency cache, etc., but no permanent population. | ::If Population = 0, there is only an automated beacon, listening post, emergency cache, etc., but no permanent population. | ||
− | :Government | + | :Government: Population+2d6-7, maximum 6. |
− | + | :Law: | |
− | + | ::If Government 0: 0. | |
− | + | ::Otherwise: Government+2d6-7. | |
− | + | :Industry: Population+2d6-7. '''DMs:''' Law 1-3 +1; Law 6-9 -1; Law A-C -2; Law D+ -3. | |
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− | :If Government 0: 0. | ||
− | :Otherwise: Government+2d6-7. | ||
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− | ==== | + | ==== Industrial Modifications ==== |
− | + | UNDER CONSTRUCTION | |
− | : | + | The maximum Population, in most cases, is equal to the world's Desirability + 1d3 - 1d3. (You can skip the die roll if you're in a hurry.) For any world except an Asteroid Belt, the world's Industrial Base (local TL code) modifies this: |
− | : | + | :Stone Age (TL0): -1 |
+ | :Primitive (TL1-3): ±0 | ||
+ | :Industrial or Pre-Stellar (TL4-9): +1, but modify Atmosphere as follows: | ||
::Atmos 3 becomes Atmos 2. | ::Atmos 3 becomes Atmos 2. | ||
::Atmos 5 becomes Atmos 4. | ::Atmos 5 becomes Atmos 4. | ||
::Atmos 6 becomes Atmos 7. | ::Atmos 6 becomes Atmos 7. | ||
::Atmos 8 becomes Atmos 9. | ::Atmos 8 becomes Atmos 9. | ||
− | : | + | :any Stellar (TLA+): +1, or +2 and modify Atmosphere as above. |
− | :: | + | There is also a -1 penalty if the world's Industrial Base is less than the Safe Tech Base rating for the Atmosphere: |
− | ::'' | + | :Atmosphere 0 or 1: minimum TL8 (pressure habitat required) |
+ | :Atmosphere 2 or 3: minimum TL5 (respirators required) | ||
+ | :Atmosphere 4, 7, or 9: minimum TL3 (filters required) | ||
+ | :Atmosphere A: minimum TL8 (pressure habitat required) | ||
+ | :Atmosphere B or D: minimum TL9 (high-pressure or corrosion-resistant habitat required) | ||
+ | :Atmosphere C or G, or Hydrosphere F: minimum TLA (deep-pressure or aerial habitat required) | ||
+ | If there is interstellar trade, you ''can'' live on such a world without the required Industrial Base, it's just more dangerous. | ||
− | + | ==== Hard Times ==== | |
− | In a Long Night scenario, worlds are cut off from galactic trade and forced to rely upon their own | + | In a Long Night scenario, worlds are cut off from galactic trade and forced to rely upon their own industrial base; modify maximum Population accordingly. Colonies which are below their Safe Tech Base have to be abandoned; reduce Population to 0, leaving ruins behind. Outposts might be maintained; if there's a colony or homeworld nearby, make a roll at ''their'' Jump level, and if successful, the outpost remains. Otherwise, it too must be abandoned. |
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− | Outposts | ||
If you want to get really complicated, than for any terraformed planet during Hard Times, ''reverse'' the terraforming effects by points equal to half the difference between the local Industrial Base and the old galactic Tech Level (e.g. if you were at TL12, and are now at TL8, you lose 4 points of terraforming). | If you want to get really complicated, than for any terraformed planet during Hard Times, ''reverse'' the terraforming effects by points equal to half the difference between the local Industrial Base and the old galactic Tech Level (e.g. if you were at TL12, and are now at TL8, you lose 4 points of terraforming). | ||
− | + | === Base Codes === | |
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:'''A''' — A-class (Excellent) Starport | :'''A''' — A-class (Excellent) Starport | ||
Line 879: | Line 714: | ||
:'''P''' — Pirate base | :'''P''' — Pirate base | ||
:'''Q''' — Ancients' site | :'''Q''' — Ancients' site | ||
− | :'''R''' — Research | + | :'''R''' — Research base |
:'''S''' — Scout base | :'''S''' — Scout base | ||
:'''T''' — Travellers' Aid Society Hostel | :'''T''' — Travellers' Aid Society Hostel | ||
:'''U''' — Galactic University | :'''U''' — Galactic University | ||
− | :'''V''' — Special enclave (prison, refugee facility | + | :'''V''' — Special enclave (prison, refugee facility, etc.) |
:'''W''' — Weather control / terraforming facility | :'''W''' — Weather control / terraforming facility | ||
:'''X''' — No starport | :'''X''' — No starport | ||
:'''Y''' — Shipyard | :'''Y''' — Shipyard | ||
:'''Z''' — Psionics Institute | :'''Z''' — Psionics Institute |