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Imperial Interstellar Scout Service Details of the worlds of the Imperium (and beyond).

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Old October 29th, 2014, 05:25 AM
combatmedic combatmedic is offline
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Default house rule for Book 3, world generation rules

Population modifiers for human worlds

Atmosphere
• Atmosphere anything other than thin, standard, or dense -1 DM
• No atmosphere or trace atmosphere -1 DM
• Corrosive -1DM
• Insidious -2 DM
These modifiers are cumulative. A world with atmosphere type C (insidious), would have a -3 DM.

Hydrographic
• -1 DM if Hydrographic 0 or A


This is meant for my ATU, but it might be useful in any Traveller campaign that assumes:

Humans will mostly remain human as we understand it, and not go in for radical modification to the point of creating new species or becoming "post-humans"


People like to be able to walk around outside, breathe the air, drink the water etc. Harsher and more forbidding worlds (compared with Earth) will tend to attract fewer colonists/support smaller populations.



Some notes/observations:

Vacuum worlds top out at population 7. Bustling arcologies and tunnel-cities with millions or even tens of millions of people are still possible, but quite unlikely.
Most airless worlds will have small populations. Starports, mines, industrial complexes, etc.


Let's say we have a vacuum world. Airless, and dry (hydro 0)-- not a garden spot.

Roll for population.

Throw a 7.

-2 because that's standard.

-3 for atmo and hydro conditions.

Pop= 2


Hundreds of people live on this world.

Let's say we get an average result for gov't type, too. Another unmodified 7.
After the math it comes out to a gov't code 2: Participating Democracy. That makes sense for such a small population. Type 1 and type 3 would result if we rolled a 6 or an 8 instead, also pretty likely results. Company/Corporation and Self-Perpetuating Oligarchy. Those also seem like really good fits to me.




What's not going to come up at all for a vacuum world, whatever its population rank? Only Type D: religious dictatorship. And of course the Referee can always place such a world by design.
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