Years ago, on a distant Mailing list, the infamous
TML, this discussion reared it's head.
Jim Vassilakos took these musings and wired them up as an alternate system for generating UWPs in his Galactic Software package.
So I ripped it's text, which I present here for your edification.
Variant Main World Generation System for Traveller
--------------------------------------------------
1. World Size. Roll 2d6-2.
2. Atmosphere. Roll 2d6-7+Size.
if size=0, atmos=0.
confine range to 0-F.
3. Hydrographics. Roll 2d6-7+Size.
if atmos is 1 or less, DM -4
if size is 1 or less, hydro=0
if atmosphere is A-C, DM -4
if atmosphere is E, DM -2
confine range to 0-A
4. Indigenous Life. Roll d12-1 twice, take lower of two rolls
if atmos is 1 or less, then life = 0
if atmos is A-C, DM -6
if hydro = 0, DM -4
if life is A-B, 50% chance of DM +2
confine range 0-D
if life is D, conduct eco-collapse:
atmos=C
hydro, DM -4
confine hydro 0+
Life Stat Explained
-------------------
0: Sterile: No indigenous life. Atmosphere is not breathable
without substantial eco-engineering.
1: Proto-cellular: Indigenous life consisted of amino acids
and/or various primitive replicators. These may have
been wiped out by transplanted organisms.
2: Single-cellular: Transplants would have taken over.
3: Multi-cellular: Transplants would have taken over.
4: Complex microscopic: Lots of colorful ooze. Transplants
would have taken over for the most part, however, there
might be some indigenous bacteria still competing.
5: Macroscopic: Mainly small indigenous sea-life which would
be competing along side whatever transplants are
present.
6: Primitive ecosystem: Oceans are teaming with indigenous
organisms, but land-based life is just carving out its
niche. Transplants may have halted the advance of
indigenous life, assuming the two are bio-compatible.
7: Teaming ecosystem: Water/Land/Air-based herbivores and
predators. Transplants would have a hard time competing
in such an advanced ecosystem. Bio-compatibility would
be an important issue.
8: Proto-sentient: Tool-fabrication, mastery of fire.
9: Sentient: Agriculture, language, symbology.
A: Non-spacefaring: Planet may be a biological protectorate
(ala the Prime Directive).
B: Early Spacefaring: Indigenous race may have been given
technology or may even have been genetically uplifted.
C: Cataclysm: Result of either war, plague, or minor
environmental mismanagement. Survivors are in a state
of slow recovery.
D: Green Hell: Result of major environmental mismanagement.
World is transformed into a greenhouse.
5. Resource Level. Roll 2d6-7+Size
confine range 0-F
Resource Stat Explained
-----------------------
0: Barren
1-4: Poor: Basic chemical diversity necessary to support
indigenous life. Otherwise, no claim to fame.
5-8: Moderate: Moderate resource base capable of being
exploited for export.
9-C: Rich: Rich resource base, one of which could command
subsector-wide influence.
D+ : Extreme: Very rich resource base, one of which could
command sector-wide influence.
6. Population. Roll 2d6-2.
if size is 2 or less, DM -1
if atmosphere is 3 or less, DM -3
if atmosphere is A, DM -2
if atmosphere is B, DM -3
if atmosphere is C, DM -4
if atmosphere if greater than C, DM -2
if atmosphere is 6, DM +3
if atmosphere is 5 or 8, DM +1
if hydro=0 and atmos>3, DM -2
if life is 0, DM -2
if life is 7+, DM +2
if res is 0, DM -3
if res is 1-4, DM -1
if res is 5-8, DM +1
if res is 9-C, DM +2
if res is D+, DM +3
confine range to 0-A
6b. Population Multiplier. Roll d9.
if pop is 0, 5 in 6 chance that popmult = 0
7. Starport. Roll 2d6 (use whichever table suits the locality
but remember that high rolls result in
a lower quality starport).
if pop=0, starport=X
if pop=1, DM +2
if pop=2, DM +1
if pop is 6-9, DM -1
if pop is A, DM -2
confine range to A-X
8. Government. Roll 2d6-7+population.
if pop=0 and popmult=0 then gov=0
confine range to 0-F
9. Law Level. Roll 2d6-7+government.
if gov=0 then law=0
confine range to 0-20
10. Tech Level. Roll d6. Modify as per the standard chart
for starport, size, hydro, and pop. Modify as per
standard chart for atmosphere except for D-E range.
Modify as per law as follows:
if is law B-D, DM -1
if is law F+, DM -2
Modify as per government as follows:
if gov = 1 or 5, DM +1
if gov = 13 or 14, DM -2
if gov = 6 or 15, DM -1
if pop=0 & popmult=0 then tech=0
confine lower bound of range to 0
11. Technical Depopulation.
if hydro is 0 or A and pop is at least 6,
then tech must at least be 4.
if atmos is 4, 7 or 9,
then tech must at least be 5.
if atmos is 3 or less or A-C,
then tech must at least be 7.
if atmos is D or F and hydro is A,
then tech must at least be 7.
if tech is less than minimum requred tech then:
pop=0, popmult=0, gov=0, law=0, tech=0, starport=X
12. Trade Classifications
As per MegaTraveller rules except as follows:
Deleted: Rich, Poor, and Industrial, Nonindustrial, Non-agro
Modified: Agricultural (may include hydro 9+)
Fluid (no size restriction, atmos A-C, hydro 1+)
13. Main Export Commodity.
if res = 5+ & tech = 1+ & pop=5+ then try to assign an export
(try as many times as there are resource points, choosing the
best outcome based on tech level)
if AG, export = d5
otherwise, export = d29+4
if no export is selected, then export=0
Export Stat Explained
---------------------
Roll Tech Etc
0 None 0 -
01 1 Textiles 5 A
02 2 Wood Products 4 A
03 3 Livestock 1 A
04 4 Agro-Consumables 4 A
05 5 Pharmaceuticals 9 -
06 6 Petrochemicals 6 L
07 7 Biologicals 1 L
08 A Antimatter H -
09 B Bio-engineering D -
10 C Computers D -
11 D Industrial Crystals 5 -
12 E Electronics C -
13 F Farm Machinery 5 -
14 G Gemstones 1 -
15 H Heavy Metals 5 -
16 I Industrial Machinery 5 -
17 J Synthetic Fabric 8 -
18 K Synthetic Foods 8 -
19 L Industrial Chemicals 7 -
20 M Rare Minerals 5 -
21 N Weaponry/Armor A -
22 O Radioactives 6 -
23 P Polymers 9 -
24 Q Cybernetics C -
25 R Robots D -
26 S Starships B -
27 T Tools 5 -
28 U Underwater Equipment 7 -
29 V Vehicles/Gravitics 8 -
30 W Banking/Insurance D -
31 X Entertainment D -
32 Y Art/Publishing/News D -
33 Z Information/Research D -
Tech=X: X is the minimum tech level
Etc=A: World must be Agricultural
Etc=L: Life must = 7+
14. Determine Bases, Gas Giants, Planetoid Belts, and Travel
Codes normally.