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Advice on a source...

bryan gibson

Absent Friend
what book/supplement was it that detailed plaent/system generatipon? The one that addressed detailed atmo and steller spectrum/classes?

I was thinking it was a DGP book, but don't recall, and i bet its likely not in print, either
 
LBB6 Scouts could produce detailed systems.

For more detail you had to get DGP's Grand Survey and Grand Census - for CT, or the combined book called The World Builder's Handbook - for MT.

If you want a more modern, and available, system generation book then 4th edition GURPS Space is pretty good.
 
You are probably thinking of Grand Survey/Grand Census or World Builder Handbook. But GURPS Traveller: First In or GURPS Space (3rd or 4th) editions can provide an equal level of detail.
 
Or, just ask Mal
 
If it's a DGP one you're thinking of then it's the World Builders Handbook (with a very green picture on the cover).
 
All of these guys are correct. Leroy Guatney also has an update/errata/Corrections of Book 6 scouts on the web somewhere, or did, as of a year ago, at least. Mostly corrections of some interpolation errors and such in the stellar charts. But if your players are not hard core astronomers or physicists, they really won't notice any glaring errors if you use the book as is.

Digest Group did Grand Survey (worlds) and Grand Census (societies). I have both, and they smoke, though Grand Survey is much more useful, overall for the type of stuf that I do with science fiction writing in general. Either can be sometimes had on eBay, ranging from 21.00 to about 40.00 if the bidding gets hot.

Grand Survey is pretty much my world building bible. Some excerpts of that material are mirrored in very old issues of JTAS. Special Supplement: Atmospheres comes to mind.

Gurps Space 4th ed is pretty good, as is (in a generic way) Decipher's Star Trek plug-in "Worlds" from drivethrurpg.com. Hero Games star hero is pretty good, too.

Later, DGP re-released a lot of that material as World Builder's Handbook.

GDW (I am not sure how the licensing went on this one) also put out "World Tamer's Handbook", which in my opinion was not up to par, really.
 
World Tamer's Handbook didn't have too much in it that was revolutionary when it came to world design, but IIRC it had some rather useful rules for colony development.
 
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