Tag Archive for 'rpgs'

[2300AD] The complete 2300AD Near Star List!

Now that my website is settled in its new home, I can finally start a new 2300AD project here. This time I’ll be moving on from the 2300AD Realistic Star Maps and going back to the original Near Star List!

Kafer space

Kafer Space (from the Kafer Sourcebook).

The first thing to do is to make the data available. I’ve transferred the original NSL (oNSL) table from 2300AD into digital form and incorporated the extra data for Kafer Space from the GDW Kafer Sourcebook – and as an added bonus I’ve also thrown in the Backdoor system from Operation Backdoor that allowed the humans to contact the Ylii (Operation Backdoor may or may not be official canon, but I’m throwing it in anyway) :). This represents all the xyz data for the stars that was originally provided by GDW.

The xyz data is presented here as they were in the Near Star Lists – I haven’t rotated or recalculated anything, I’ve just transcribed them (though I have reordered some of the stars in the list to be consecutive to their companions for clarity). The list itself is in a CSV format that can be imported into Astrosynthesis, and the canonical arms are also provided in that format – the Backdoor route is also there. Keep in mind that this is not consistent with the Realistic Near Star Map that I’ve produced on this website (IIRC the coordinates may be flipped on the realistic map too) – but it’s all internally consistent at least.

The oNSL stars are listed with a Catalogue Number (Cat_no) between #230001 and #230749, the Kafer Sourcebook stars are #230750 to #230787, and the Backdoor brown dwarf system is #230788. So if you only want to use the oNSL stars you can ignore or remove the stars from 230750 and up (or just use the 2300AD_original_oNSL.csv in the zipfile below).

While there are some real stars in Kafer space in the oNSL (e.g. Gamma and Lambda Serpentis), the Kafer stars and the Backdoor system listed between #230750-#230788 are entirely fictional. Almost all of these fictional stars are within 7.7 ly of other stars (as shown in the screencap above), which means that there are no “dead ends” in Kafer Space – this is quite unlike the distribution of real stars in the oNSL (I would imagine that this was a design oversight when the new stars were being added – realistically I think the stars should be more spread out, with more being inaccessible).

You can download the CSV data from the link below. As usual, please don’t redistribute these files yourself – just link back to this page if you want to spread the word! The zipfile contains the following:
2300AD_original_Kafer+oNSL.csv (the full oNSL+Kafer Sourcebook xyz, cat_no, name and startype data table),
2300AD_original_oNSL.csv (just the oNSL data),
– The French, American, and Chinese Arms in a csv format that can be imported into Astrosynthesis,
– the original_2300AD_NSL+Kafer.AstroDB file that can be opened in Astrosynthesis.

Next time, we’ll start exploring some of the lesser known side branches of the original 2300AD near star map!


Copyright stuff: The 2300 AD game in all forms is owned by Far Future Enterprises. Copyright 1986 – 2016 Far Future Enterprises. 2300 AD is a registered trademark of Far Future Enterprises. Far Future permits web sites and fanzines for this game, provided it contains this notice, that Far Future is notified, and subject to a withdrawal of permission on 90 days notice. The contents of this site are for personal, non-commercial use only. Any use of Far Future Enterprises’s copyrighted material or trademarks anywhere on this web site and its files should not be viewed as a challenge to those copyrights or trademarks. In addition, any program/articles/file on this site cannot be republished or distributed without the consent of the author who contributed it.

[2300AD] Stutterwarp Drive limits

Just a quick update to say that I’ve posted an excel file showing the Stutterwarp Drive limit distances for pretty much every celestial body that anyone is likely to encounter in 2300AD, from the largest star to the smallest moon or ‘dwarf planet’.

I determined the distance of the “Threshold” (where Stutterwarp drops from FTL to sub-FTL) and the “Wall” (where it drops from sub-FTL to orbital velocity) by calculating the distance at which the gravitational field strength was 0.0001G (0.001 m/s²) and 0.1G (1 m/s²) – those distances are shown in AU in the red columns in the spreadsheet and are the most accurate numbers to use. Note that the Wall distance is also the maximum distance within which drives can be discharged around that body.

For comparison purposes, I also calculated the distances according to the formulae provided on pg 265 of the MGT 2300AD corebook – to calculate the limits for planets and sub-stellar objects, I extrapolated the formulae to use mass values measured in Jupiter Masses and Earth Masses. Note that the formula used in 2300AD to determine the stutterwarp threshold of any given planet is wrong (stutterwarp limits are nothing to do with planetary radius, and this formula produced results that are nothing like the real numbers for such worlds) – I’ve ignored it completely, so you should use the results from the table in the spreadsheet instead.

All distances are measured from the centre of the body. Note that the Wall distances for the smallest objects shown in the table may not actually be above the planetary surface, which means that (a) stutterwarp drives can continue to be used at sub-FTL speeds right up down the surface of these objects and (b) the drives cannot be discharged around these bodies.

You can download the excel spreadsheet here:

System Book 2: Xibalba is now available!

Lately I’ve been busy writing a new System Book for Spica Publishing, and I am pleased to announce that System Book 2: Xibalba is now available for purchase!

Xibalba originally started off as a one-paragraph writeup for the (now probably dead) Spica Sector book – but we were looking for interesting things to release as smaller products, and we figured it’d be fun to expand upon it and release it as the next System Book. Quite a bit of science went into designing this system to be as realistic as possible (like System Book 1: Katringa before it, which I co-authored), which is named after the asteroid belt that orbits its white dwarf primary. I evolved the star itself and incorporated the effects of the star’s red giant phases on its worlds – one planet was consumed during the giant phase, another’s surface was completely melted, and all of the planetary orbits expanded outwards as the primary lost its mass during its planetary nebula phase (again, Gravity Simulator proved very useful for this!).

The ‘adventure hook’ is that there are strange hauntings and manifestations occurring in the system that have so far defied explanation, and there is plenty for any visting PCs to investigate. I wanted to bring some mystery and a sense of wonder and of the unknown to the setting, but it’s designed to be more “spooky” than “horror”. Inspirations include the movies Solaris, Event Horizon, and the Terran Trade Authority: Spacewreck book. It may be smaller (and cheaper) than System Book 1: Katringa, but there’s still plenty to explore!

Are you brave enough to Visit Xibalba?

Spica Publishing is pleased to announce that its latest product – System Book 2: Xibalba – is now available from RPGnow and DrivethruRPG. This 9-page PDF is written by Constantine Thomas, and is available for $3.99.

Spica Publishing presents System Book 2: Xibalba – a complete planetary system around a white dwarf star. This supplement is compatible with the current edition of the Traveller or any other SF RPG, and can be incorporated into an existing campaign or used as the focal point of an adventure. Inexplicable events plague the inhabitants of the system – are they really haunted by the ghosts of the dead, or is there a more rational explanation for the manifestations?

System Book 2: Xibalba includes:
– A realistic planetary system, based on current astrophysical knowledge.
– Details of the worlds in the system, including the barren worlds of Akabna, Balamna, and Chamna, the Xibalba belt, and the distant gas giant Sisna.
– A description of the small mining community on the asteroid of Nuevo Tikal.
– A brief history of the system and its major events, including the madness that destroyed the Caracol habitat.
– Ideas and suggestions for the strange ‘manifestations’ that haunt the inhabitants of the Xibalba system.
– Adventure seeds to occupy Player Characters while in the Xibalba system.
– Rules for incorporating Xibalba into Spica Publishing’s Outer Veil setting.

Download it today!

“Traveller” and the Traveller logo are Trademarks owned by Far Future Enterprises, Inc. and are used with permission. The Traveller Main Rulebook is available from Mongoose Publishing.

System Book 1: Katringa is now available!

I’ve been spending the past few months working for Spica Publishing on a new supplement for the Mongoose Traveller RPG called System Book 1: Katringa, and I am pleased to say that it is now available for purchase!

There’s actually some science in it too, since I used my realistic planetary system generator (which is based on the latest research) to make the system, and I made the physical details of the young A8 IV primary star, its planets, their orbits and Katringa itself as realistic as possible (I even figured out the orbital evolution of the moons of the gas giants in the system!). So if you’re looking for an interesting new planetary system for your SF games then please do check it out!

Welcome to Katringa!

Spica Publishing is pleased to announce that its latest product – System Book 1: Katringa – is now available from RPGnow and DrivethruRPG. This 30-page PDF is written by Richard Hazlewood with physical data by Constantine Thomas, and is available for $6.99.

System Book 1: Katringa is the first in a series of books from Spica Publishing that describes a complete planetary system and its society, and is designed for use with Mongoose Traveller or any science-fiction RPG. Katringa is a former corporate mining colony that is gradually being allowed more independence over time, although corruption still pervades the government. Conditions are harsh in the asteroid belt close to the system’s energetic primary star, but the riches are worth the risk.

System Book 1: Katringa includes:
– A realistic planetary system, based on current astrophysical knowledge.
– Details of the worlds in the system, including the mineral-rich Idowa Belt, the gas giants Accra and Yendi and their moons, and Olufemi and the Outer Asteroids.
– A planetary map of Katringa showing major landmarks and settlements.
– A full physical description of Katringa, including a detailed breakdown of its geographical features and timekeeping system.
– Katringa’s unique African-influenced society, history and government.
– Important NPCs that may be encountered on Katringa, from all walks of life.
– Adventure seeds to occupy Player Characters while in the Katringa system.
– Detailed asteroid mining rules.

Download it today!

“Traveller” and the Traveller logo are Trademarks owned by Far Future Enterprises, Inc. and are used with permission. The Traveller Main Rulebook is available from Mongoose Publishing.