Preview: World Builder's Handbook

MongooseMatt

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The truly long-awaited World Builder's Handbook for Traveller is imminent! All going well, you should be seeing it on PDF and pre-order in the last week of the month. So, what can you expect to see?

Ultimately, this book is a toolset for the Referee to expand a world or system profile into a fully realised setting. It includes star system generation procedures for determining the type and location of a system’s significant stars and worlds, an expansion of mainworld generation – both physical and social – and the specifics for applying these rules to determining the physical and (if inhabited) social characteristics of the star system’s other worlds.

1WBH - Spread 2.jpg

Both comprehensive and modular, this handbook allows the Referee to focus on whatever aspect of a world or system’s characteristics are most important to their adventure or campaign, and it includes knowledge gained in the thousands of exoplanetary systems discovered over recent years. You will be able to build habitable and hostile worlds, moons, gas giants, twilight worlds, and this book will showcase what your Travellers can see in the skies above these worlds.

2WBH - Spread 1.jpg

Written for those wanting to dress up a world without paralysing (!) maths, those wanting to create a layer of verisimilitude in the planets they create, and those wanting to be sure the astrophysics of their universes hold true, the World Builder's Handbook utilises the modular nature of Traveller to allow you to use as much or as little as you need for each adventure.

3WBH - Spread 3.jpg

Also included are checklists, forms, examples, and the procedures and equipment used by the Imperial Interstellar Scout Service to survey and record information on the thousands of systems within and surrounding the Third Imperium, as well as a glossary to cover the astronomical terms introduced.

So get ready to dive into the World Builder's Handbook and begin to build your universe your way.

Expect to see this mighty tome on the week of June 26th!
 
Looking forward to it, but I am already concerned about the editing. The very first sentence I read needs a correction. Last paragraph of page 30: ...we can computer their various orbital periods.
 
The truly long-awaited World Builder's Handbook for Traveller is imminent! All going well, you should be seeing it on PDF and pre-order in the last week of the month. So, what can you expect to see?

Ultimately, this book is a toolset for the Referee to expand a world or system profile into a fully realised setting. It includes star system generation procedures for determining the type and location of a system’s significant stars and worlds, an expansion of mainworld generation – both physical and social – and the specifics for applying these rules to determining the physical and (if inhabited) social characteristics of the star system’s other worlds.

View attachment 1081

Both comprehensive and modular, this handbook allows the Referee to focus on whatever aspect of a world or system’s characteristics are most important to their adventure or campaign, and it includes knowledge gained in the thousands of exoplanetary systems discovered over recent years. You will be able to build habitable and hostile worlds, moons, gas giants, twilight worlds, and this book will showcase what your Travellers can see in the skies above these worlds.

View attachment 1082

Written for those wanting to dress up a world without paralysing (!) maths, those wanting to create a layer of verisimilitude in the planets they create, and those wanting to be sure the astrophysics of their universes hold true, the World Builder's Handbook utilises the modular nature of Traveller to allow you to use as much or as little as you need for each adventure.

View attachment 1083

Also included are checklists, forms, examples, and the procedures and equipment used by the Imperial Interstellar Scout Service to survey and record information on the thousands of systems within and surrounding the Third Imperium, as well as a glossary to cover the astronomical terms introduced.

So get ready to dive into the World Builder's Handbook and begin to build your universe your way.

Expect to see this mighty tome on the week of June 26th!
This is amazing - exactly what I wanted to see.
 
Excellent - this is the final element I've been waiting on before starting a deep dive into building a new campaign setting. Between this, the Sector Construction Guide, and Book 4 of the Great Rift boxed set, I should be able to put together quite a detailed sandbox. (I've got in mind a space including three globular clusters, two of them partially interpenetrating, occupied by a long-lost (misjumped) Solomani colonizition effort and maybe three or four native sophont species. Sort of a Known Space in miniature setup, I guess.)
 
In a sci-fi RPG why would you need to know the age of a star and all the rest of those things?
If you want a detailed universe you build from scratch, why wouldn't you want it?
For those who want to gloss over it, Don't roll it.
I used the LBB World Generation system for numerous tabletop wargaming campaigns. not just Traveller.
 
In a sci-fi RPG why would you need to know the age of a star and all the rest of those things?
You don't need to.
If I did this book right, you only need to do what you want to do for a system. The principle of MOARN - map only as really necessary allows you to develop the details of a system that are of interest to the referee or to the story (which aren't necessarily the same things, but that's the referee's issue to deal with). The 'sci' in sci-fi is science, so the results should at least not contradict science without an excuse, and stars have defined lifespans based mostly on their mass, and that also determines their colour, diameter and the location and size of their habitable zones.

So there are reasons why the age of star matter if you want to determine the likelihood of advanced life developing, atmospheric evolution etc., but that matters more for newly created systems. If you already start with the Mainworld and add the star, it's just colour (sometime literally) background and a prompt to explain why something that shouldn't be there (like a habitable world around a high-mass star) is there. Deneb comes to mind...

The book covers two main methods to build world:
One is the Expanded method, where you start with the presence of a star system in a hex and then create stars and then the planets around them. For that method, the age matters, as a stars lifespan is inversely related to its mass - big bright stars will tend to go through the giant phase and die off long before worlds develop complex ecosystems - something before the planets even fully form while smaller stars might be as old as the galaxy itself, maybe older. Even in this method, you don't need to develop details for every planet, just whichever one you're interested in - usually the one in the habitability zone. Sometimes it makes sense - if you have the time and inclination - to build out the whole system and then pick - purposefully or randomly, a mainworld to develop further. You can even develop details on the entire system, but that's extremely time consuming for systems that might only be a short stop on the route to somewhere else. I only did it in my testing, and even with the help of a very unwieldy spreadsheet it wasn't a complete.

The other method is the continuation method. It assumes you already have a Mainworld generated, either using the Core book or from an existing Traveller setting, and you want to expand the details of the system or world. In this case 'all the rest of those things' are only those things that you want to develop. In most cases, they don't need to be developed at once, or at all, though there is a flow of dependences in that Size feeds Atmosphere feeds Hydrographics , and likewise Population feeds Government feeds Law Level and most of those (and Starport) feed Tech Level, so when you dig into the details of these values, the other Physical or Social values will have some dependency on one another.
 
Looking forward to it, but I am already concerned about the editing. The very first sentence I read needs a correction. Last paragraph of page 30: ...we can computer their various orbital periods.
<insert Homer Simpson faceplant>
What, computer isn't a verb?
Well, I do proof these things at least three times, including a print out and red pen edit before I turn them in, but I'm blind to some of my own errors. Maybe Skynet ChatGPT integration into Word will help in the future.
 
Any chance of a branded slide rule to go along with it? (Yes, I would buy one.)
I wanted stencils and coloured pencils to come with the Sector Construction Guide, but it apparently wasn't in the budget, so I'm guessing slide rules are off the table. And suppose a virtual Antikythera mechanism is out of the question...
 
Will there be a disclaimer in the intro?

All material contained within likely to be invalidated by JWT discoveries... :)
 
Will there be a disclaimer in the intro?

All material contained within likely to be invalidated by JWT discoveries... :)
There is a disclaimer;

'Forty years further into the future, much of what follows, at least on the physical proprieties of star systems and worlds, will likely be proven incorrect or at least incomplete, but this book will attempt to bring the process of star system generation and physical world development in line with current knowledge.'
 
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