TEXT:  
   
   
  
   
  2 
   
  Introduction 
   
  Multiverse Kit Part 3 
  Planetary Details 
   
  You’ve found a planet, or, you need to 
  describe the current on your players are. They 
  are asking questions, scanning away and have 
  a need to know the answers to some pressing 
  questions, such as: 
   
  What is the atmosphere composed 
  of? 
   
  What is the gravity like? 
   
  The size and other details of the 
  planet? 
   
  This Kit-part will cover those basic questions 
  about the planet itself. Part 4 of this kit will 
  deal with any inhabitants the planet may 
  have, plus what technology they may have to 
  work with. 
   
  Notes: 
   
  This kit can be used to cover moons 
  and standard planets as well. 
   
  There is some overlap with the planet 
  guide in part 2. This is intentional, as 
  this part goes into detail about the 
  planetary body itself. This may be 
  used in place of the guide there or a 
  supplement to it. 
   
  The calculations and details here are 
  very simplified for ease of play and in 
  no way represent just how complex 
  the real figures and details would be.  
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
  Credits 
   
  Author 
  Christopher Kentlea 
  Produced by 
  Ennead Games 
  www.enneadgames.com 
   
  Go here for free RPG resources, samples 
  and news about upcoming products 
   
  twitter: @enneadgames 
   
   
   
  Legal 
   
  Copyright 
  Ennead Games ©2012 
   
   
   
  Contents 
  Introduction .................................................... 2 
  Credits ............................................................. 2 
  Legal ................................................................ 2 
  Planet Details .................................................. 3 
  Physics ......................................................... 3 
  Other Information ....................................... 8 
  Coming Soon ................................................... 8 
   
   
   
  
   
  3 
   
  Planet Details 
   
  Most of the charts and details below apply to 
  Terrestrial, or non-gas, planets. Either ignore 
  anything that doesn’t make sense for a giant, 
  or use it to make for a more interesting world.  
   
  Example: normally a gas-giant would not 
  support any civilisation, but your explorers 
  find traces of life in the atmosphere. 
   
  Physics 
   
  Size 
  The size of the planet affects many other 
  features. Roll a d10 and make a note of this 
  number, it will be used in other factors later. 
   
  For ease of design – a moon sizes can be no 
  bigger than (size of planet – 2). SO if you had a 
  planet of Size 6, it could not have a moon(s) 
  bigger than size 4. 
   
  D10 
  Size 
  Circumference 
  1 
  Minuscule 
  1d10+4 
  2 
  Tiny 
  2d10 
  3 
  Small 
  4d10 
  4 - 6 Average 
  10d10 
  7 
  Large 
  10d10 * 2 
  8 
  Huge 
  10d10 * 3 
  9 
  Enormous 
  10d10 * 4 
  10 
  Massive 
  10d10 * 5 
   
  The circumference is measured in 000’s of km 
  (Kilometres or 1000 meters). 
   
  Example: Earth would be a Size 4 planet, at 
  approx. 40,000 km circumference. 
   
   
   
   
   
   
   
   
   
   
  Density 
  As a good rule of thumb, the bigger the 
  planet, the higher the density. A higher 
  density may also indicate a higher mineral 
  make up. It also increases gravity and 
  atmosphere thickness.  
   
  Roll a D10-1 and add the Planets size to this 
  result. 
   
  D10 + 
  Size 
  Density 
  Gravity 
   
  1 
  Negligible 
  Negligible 
  2 
  Very Low 
  0.01 -> 0.04 
  (1d4) 
  3 
  Low 
  0.05 -> 0.10 
  (1d6+4) 
  4 
  Light 
  0.2 -> 0.4 
  (1d3) 
  5 
  Below Average 
  0.5 -> 0.7 
  (1d3) 
  6 
  Average 
  0.8 -> 1.2 
  (1d5) 
  7 
  Above Average 
  1.3 -> 1.7 
  (1d5) 
  8 
  Heavy 
  1.8 -> 2.0 
  (1d3) 
  9 
  Very Heavy 
  2.1 -> 2.5 
  (1d4) 
  10 
  Massive 
  2.6 -> 2.7 
  (1d2) 
  11 
  Enormous 
  2.8 -> 3.0 
  (1d3) 
  12 + 
  Extreme 
  3.0 
  + 
  0.1 
  point(s) per size 
  point 
   
  1d3 results may achieved by rolling a d6 and 
  halving the result, rounding down. 
   
  1d2 results can be any dice roll. Odd =1, Evens 
  =2. 
   
   
   
   
   
   
   
   
  
   
  4 
   
   
  Gravity 
  Gravity plays an important factor on any 
  planet. A higher gravity makes things weigh 
  more, makes it harder to reach escape 
  velocity when trying to leave and many other 
  factors besides.  
   
  Earth is the base at 1. 
   
  For 
  very 
  simple 
  calculations 
  take 
  the 
  weight/escape velocity etc. it would be on 
  Earth and multiply it by the gravity number. 
  This is by no means scientifically accurate, but 
  speeds up play.  
   
  Earths escape velocity: 11 km/s (approx.) 
   
   
  Atmosphere Pressure 
   
  Generally, 
  bigger 
  planets 
  have 
  thicker 
  atmospheres, but this is not always the case. 
  Some smaller planets may have a thick 
  oppressive atmosphere, like Venus which is 
  90+ times the pressure of Earths. 
   
  When working out Atmosphere details, round 
  down, with a minimum of 1. 
   
  AP = 1d10-3 + (1/2 Size) + (1/2 Density) 
   
  Result 
  Thickness 
  Atmosphere 
  Rating 
  0 
  None/Negligible 
  0 
  1 
  Trace 
  1  
  2 
  Thin 
  2 (1d2) 
  3 
  Thin 
  4 (1d4) 
  4 
  Thin 
  6 (1d6 
  5 
  Thinner 
  8 (1d8) 
  6 
  Standard 
  10 (1d10) 
  7 
  Thicker 
  20 (2d10) 
  8 
  Thick 
  40 (4d10) 
  9 
  Slightly Dense 
  80 (8d10) 
  10 
  Dense 
  100 (10d10) 
  11 
  Very Dense 
  200 (20d10) 
  12 
  Super Dense 
  400 (40d10) 
  13 + 
  Ultra Dense 
  400 +  
  (40d10 + 1d10 
  per AP point) 
   
  The AR column has two numbers, pre-set and 
  random, if you wish for variety in design. 
   
  These values reflect typical values for this 
  planet, at sea level or equivalent. 
   
  Simple rule to determine what the pressure is 
  like compared to Earth: 
  AR x 10 = % of pressure as it would be on 
  Earth.  
   
  Some Suggested Effects of Atmosphere 
  Pressure 
   
  The lower the pressure, the lower the 
  temp needed to boil a liquid. 
  Example: 
  Water 
  boils 
  at 
  100 
  centigrade and would boil quicker in a 
  lower AP region. Higher pressure 
  would be the opposite.  
   
  Any side effects from atmospheres 
  types (see next section) are increased 
  with higher pressure. 
   
  Pressure greatly above or below the 
  home planet can have adverse effects 
  on those not suitable to living there. A 
  very high pressure can crush vehicles 
  and life forms. 
   
   
  Atmosphere Type 
   
  There are two methods here for determining 
  what the atmosphere is composed of. 
  1. Generic/simplified 
  2. Random chemical composition 
   
  Simplified 
  Rather that determining each chemical that 
  makes up the atmosphere, you simply roll and 
  get a generic type, like “Icy” or “Earth Like”. 
   
  Randomised 
  Using this system you determine the main 
  gases that make up the atmosphere and the 
  rough %. Using this option does make for 
  more detailed atmospheres, but, will result in 
  more work. 
   
   
   
  
   
  5 
   
  Simplified Atmosphere types 
   
  D12 
  Primary Atmosphere 
  1 
  Ammonia/Toxic 
  2 
  Argon/Inert 
  3 
  Carbon Dioxide/Greenhouse 
  4 
  Chlorine/Corrosive 
  5 
  Earth like/Standard 
  6 
  Helium/Inert 
  7 
  Hydrogen/Combustive 
  8 
  Icy/Cold 
  9 
  Methane/Toxic 
  10 
  Nitrogen/Suffocating 
  11 
  Oxygen/Combustive 
  12 
  Sulphur/Volcanic 
   
  Each point in AR (Atmosphere Rating) can also 
  have the following effects. These effects can 
  be negated or prevented if appropriate 
  precautions are taken. 
   
  Type 
  Effect 
  Cold 
  Does AR cold/frost damage 
  per second 
  Corrosive 
  Does AR amount of acid type 
  damage per 60 earth seconds 
  Combustive 
   Any ignition/spark has a 
  chance to do fire + explosion 
  damage in a radius equal to 
  AR x 10 (with same amount in 
  damage) 
  Greenhouse 
  Very hot and oppressive. Does 
  AR in heat damage per second 
  Pressure damage/effects are 
  doubled 
  Inert 
  Although breathable by most 
  races (racial differences not 
  included), too much expose 
  can cause “Inert Gas Narcosis” 
  (Symptoms 
  include: 
  Light-
  headedness, 
  reduced 
  dexterity, 
  euphoria, 
  and 
  impaired judgment.) 
  Each second exposed to this 
  has a chance equal to AR/10 
  of this occurring 
  Standard 
  Same 
  as 
  Earth, 
  same 
  problems as well as same 
  benefits. 
   
  Suffocating 
  Breathing is impossible here 
  for anything not adapted to 
  this atmosphere. Each AR 
  point  
  Toxic 
  Each AR represents how much 
  poison damage is done to 
  anyone who breaths this 
  atmosphere 
  , 
  with 
  every 
  breath 
  Volcanic 
  Each AR point represents an 
  active 
  volcano. 
  The 
  atmosphere is also slightly 
  corrosive (As Corrosive but 
  divided the rating by 10) 
   
  Of course, other types do exist. Feel free to 
  create your own, or come up with unique 
  atmospheres for your own worlds. 
   
  Randomised Atmosphere types 
   
  The gases are present in order of magnitude. 
  A 
  Nitrogen/Ammonia 
  atmosphere 
  for 
  example 
  has 
  more 
  Nitrogen 
  then 
  Ammonia/Nitrogen one. 
   
  Use the details in the simplified chart to give 
  you an idea of what effects the various gases 
  have. 
  Determine % of gasses: 
  P = Primary, S=Secondary, T=Tertiary, with 
  any % leftover being random trace gases. 
   
  D8 
  % of gasses 
  1 
  [P=1d5x10] [S=1d4x10] 
  2 
  [P=1d5x10] [S=1d5x10] 
  3 
  [P=1d6x10] [S=1d10][T=1d10] 
  4 
  [P=1d6x10] [S=1d20][T=2d10] 
  5 
  [P=1d8x10] [S=1d20] 
  6 
  [P=1d8x10] [S=1d10] [T=1d10] 
  7 
  [P=1d10x10] [S=1d10] 
  8 
  [P=1d10x10] [S=Left over] 
   
  If you get, for example a 70/30 mix of 
  cold/corrosive then the cold effect would be 
  70% of what it would be if the atmosphere 
  was 100% cold and 30% if it was corrosive etc. 
   
   
   
  
   
  6 
   
  Day 
  How long does it take for the planet to rotate 
  on is axis? This is measured in Earth-hours. 
   
  Day rating is = (1d10-1) + Size 
   
  (D10-1) + 
  Size 
  Earth hours per day 
  1 
  1d4 
  2 
  1d8 
  3 
  1d10 
  4 
  2d10 
  5 
  4d10 
  6 
  5d10 
  7 
  6d10 
  8 
  7d10 
  9 
  8d10 
  10 
  9d10 
  11 
  10d10 
  12 
  12d10 
  13+ 
  1d10 per day rating 
   
  Year 
  How long does it take for the planet to orbit 
  its parent body? This is measured in Earth-
  days. 
    
  D10 
  1 orbit (in Earth days) 
  1 
  10d10 
  2 
  10d10 x 2 
  3 
  10d10 x 3 
  4 
  10d10 x 4 
  5 
  10d10 x 5 
  6 
  10d10 x 6 
  7 
  10d10 x 7 
  8 
  10d10 x 8 
  9 
  10d10 x 9 
  10 
  10d10 x 10 
   
  A local ”year” compared to Earth is equal to 
  the orbit time/365. 
   
   
   
   
   
   
   
   
  Tilt 
  Does the planet have a perfect axis, is it tilted 
  a bit like Earth, or has something happened to 
  make it rotate almost on its side like Uranus.  
   
  It is the angle between its rotational axis and 
  its orbital plane. 
   
  D10 
  Degree of tilt 
  1 
  0 
  2 
  1d10 
  3 
  1d10 + 10 
  4 
  1d10 + 20 
  5 
  1d10 + 30 
  6 
  1d10 + 40 
  7 
  1d10 + 50 
  8 
  1d10 + 60 
  9 
  1d10 + 70 
  10 
  1d10 + 80 
   
   
  Hydrosphere 
   
  Also known as the amount of surface liquid 
  that may be present. Even worlds with 
  strange atmospheres may have liquid on the 
  surface. It’s the nature of that liquid that 
  changes. On Earth-like planets it may be 
  water, but on others it could be some form of 
  liquid ammonia or something else more 
  exotic. 
   
  D12 
  % of land mass covered in 
  liquid 
  1 
  0 
  2 
  01 – 05 (1d5) 
  3 
  06 – 15 (1d10 + 5) 
  4 
  16 – 25 (1d10 + 15)  
  5 
  26 – 35 (1d10 + 25) 
  6 
  36 – 45 (1d10 + 35) 
  7 
  46 – 55 (1d10 + 45) 
  8 
  56 – 65 (1d10 + 55) 
  9 
  66 – 75 (1d10 + 65) 
  10 
  76 – 85 (1d10 + 75) 
  11 
  86 – 95 (1d10 + 85) 
  12 
  96 – 100 (1d5 + 95) 
   
   
   
  
   
  7 
   
  Magnetic Field 
   
  The measure of the planets natural magnetic 
  output. A strong magnetic field can affect 
  biological and technological entities, albeit in 
  different ways. It is expressed is Teslas, with 
  Earth’s magnetic field ranging from 30 
  microteslas (micro being 1000th) at the poles 
  to approx. 60 microteslas at the equator. 
   
  This gives the Earth an average magnetic field 
  strength of 45 microteslas.  Not all planets 
  have regional variances in their fields, but it’s 
  worth knowing if they do, in case you need to 
  find an area safe for you to land and explore. 
   
  D100 
   
  01 – 50 
  No major regional variance 
  51 – 55 
  Higher at a pole 
  56 - 59 
  Higher at both poles 
  60 – 70 
  Higher at equator 
  70 – 75 
  Higher in random spots 
  76 - 80 
  Fluxing - Poles 
  81 – 85 
  Fluxing - Equator 
  86 – 90 
  Fluxing –Random spots 
  91 - 96 
  Fluxing – Whole planet 
  97 
  Unstable – Poles 
  98  
  Unstable – Equator 
  99 
  Unstable – Random Spots 
  00 
  Unstable – Whole planet 
   
  The amount of change from the average for 
  the planet can be determined by 1d6 x 10, as 
  a percentage. 
   
  Fluxing fields change over a period of time 
  and are regular, almost like clockwork.  The 
  strength increases by regular amounts over a 
  period of time (1d100 days) until it hits its 
  peak. (Double base MFS). Then it drops by the 
  same amount over the same period of time, 
  dropping below its average by the same 
  amount it increased. Once this low has been 
  reached, the field increases in strength and 
  the cycle repeats. 
   
   
  Unstable fields are, as the name suggests, 
  unstable, both in duration and strength. Each 
  hour  
   
  To give an idea of the intensity of these fields, 
  I bar magnet has about 10microteslas, a 
  typical strong lab magnet, such as one you 
  may find in a MRI, has 10 Teslas strength (and 
  is about the limit for safe expose for humans), 
  while at the other end of the spectrum, a 
  neutron star has at its surface 100 Mega(000s) 
  Teslas! 
   
  1d10-2 + 
  size 
  Base MFS 
  1 
  Negligible 
  2 
  1 
  3 
  2 
  4 
  4 
  5 
  8 (Earth Standard) 
  6 
  16 
  7 
  32 
  8 
  64 
  9 
  128 
  10 
  256 
  11+ 
  Doubles with each point 
   
  Knowing the MFS of your home planet is 
  important (assume it same as Earths or [1]). 
  Your 
  unshielded/protected 
  organic 
  and 
  technological components are affected by a 
  weaker or stronger field several ways, such as: 
   
  Lower MFS than home world: 
   
  Radiation effects from space would 
  increase due to a thinner atmosphere 
   
  Navigation may be harder, if not 
  impossible 
   
  Higher MFS than home world: 
   
  Technology may not work properly, 
  especially if they contain any ferrous 
  materials 
   
  Prolonged exposes causes long term 
  health problems, both mental and 
  physical 
   
  Some materials may start to behave 
  in odd ways 
   
  Each point doubles the strength of the MF, 
  determines chances (and strength) of effects 
  etc. against unprotected entities. 
   
  
   
  8 
   
  Other Information 
   
  Orbiting Bodies - Natural 
  D20 
  # of bodies 
  01 – 10 
  Nothing 
  11 – 15 
  1 
  16 
  2 
  17 
  3 
  18 
  4 
  19 
  5 
  20 
  6 
   
  Orbiting Bodies Types 
  D8 
  Type 
  1 
  Cloud - Dust 
  2 
  Cloud – Gas 
  3 
  Debris 
  4 -5 
  Moon 
  6 
  Plasma Storm 
  7 
  Ring 
  8 
  Something Else/Artificial 
   
   
  Primary/Dominant Terrain 
  No one planet is 100% covered with one type 
  of terrain, unless it’s artificially constructed, 
  but even then it’s more like 99%. However, 
  some planets are dominated by one type of 
  terrain, be it forests or mountains etc. 
   
  D12 
   
  1 
  Canyons 
  2 
  Desert 
  3 
  Forest 
  4 
  Glacier/Ice/Tundra 
  5 
  Islands 
  6 
  Mountains 
  7 
  Plains 
  8 
  Scrubland 
  9 
  Volcanic 
  10 
  Wasteland/devastation 
  11 
  Swamp/Bog 
  12 
  Exotic/Unnatural/Artificial 
   
   
   
   
   
   
  Highest Life forms 
   
  D20 
   
  01 
  None 
  02 
  Microbes, no plants 
  03 – 04 
  Microbes, algae 
  05 – 06 
  Microbes, fungi 
  07 – 10 
  Microbes, basic plants 
  11 – 14 
  Base animals (worms etc.) 
  15 – 16 
  Insects 
  17 – 18 
  Mammalian level 
  19 
  Hominids/Higher Life 
  20 
  Sentient Life 
   
  Each result on the chart above includes those 
  that are above it on the list, so a planet with 
  microbes and basic plants also have fungi as 
  well. 
   
  Although the above chart uses Earth based 
  life forms, this is just for example. Most, if not 
  all planets would not share a similar life form 
  evolution to Earth. This is just to show you the 
  level of complexity that life has achieved on 
  this particular planet. 
   
   
   
  Coming Soon 
   
  The Multiverse Kit Part 4 
   *Sentient Life * 
   
  The final core part of the MVK will deal with 
  the inhabitants of the planet you have found. 
  It will assume they are sentient, but how 
  developed are they? Are they native to the 
  planet or do they come from elsewhere. All 
  these questions and more will be answered in 
  Part 4. 
   
   
  
SOURCE: textdata/thevault/Starfinder [multi]/3rd Party/Ennead Games/Ennead Games - Multiverse Kit Part 3 - Planet Details.pdf