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Stars in Shadow: Star and Planet Types by AriochIV Stars in Shadow: Star and Planet Types by AriochIV
Concept art for Stars in Shadow, of how stars and planets are represented in the game.

** WARNING: SCIENCE CONTENT **

In the game, star systems are abstracted to have four orbital slots, which can each have a planet or be left empty. Based on the star type (some being hotter or colder), each orbit has a heat zone which determines what kind of planet can exist in it (you can't have an iceball in a hot zone, for example). Not all orbits are valid for all star types; for example, a tiny red dwarf only has 3 orbits, to represent its smaller size, and a red giant is missing its inner two orbits, representing the fact that it is a dying star that has swelled to consume any planets that might have been in those orbits.

The planets themselves are abstracted into a range of set sizes, the terrestrial habitable worlds being in the range from small, medium, and large. The diagram at upper right shows a variety of planet types, and demonstrates how they relate to each other in terms of temperature, atmosphere thickness, and amount of surface liquid.

The "exploitation" concept addresses how the planet graphic changes due to player habitation and development. When a colony is established and as it grows, expanding cities become visible on the surface (and light up the night side). Particular types of development can change the surface; industrial development may result in visible pollution, and terraforming efforts may show the greening of otherwise barren landscapes.

You can see more planet concepts here, and how the planets actually appear ingame here.

Stars in Shadow is a space 4X strategy game currently under development. 
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:icongrisador:
grisador Featured By Owner Jul 10, 2015
Seems very awesome !
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:iconapple-wolf1234:
Apple-Wolf1234 Featured By Owner Mar 8, 2015  Student Artist
This is so fascinating!! I don't understand most of it, but it's amazing!! <3
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:iconariochiv:
AriochIV Featured By Owner Mar 8, 2015   Digital Artist
Thanks. I added in some short descriptions.
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:iconlabyrinth-wunderkind:
Labyrinth-Wunderkind Featured By Owner Jan 25, 2015  Hobbyist General Artist
Wow, this is awesome, very helpful!  Ty for the link!*Free Icon/Emote* Molang (I Love It!) 
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:icontzoli:
Tzoli Featured By Owner Jun 24, 2013  Hobbyist Digital Artist
Is it for a strategy game?
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:iconariochiv:
AriochIV Featured By Owner Jun 24, 2013   Digital Artist
Yes, it's an as-yet-unnamed turn-based SF strategy game.
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:icontzoli:
Tzoli Featured By Owner Jul 12, 2013  Hobbyist Digital Artist
I see you are a multi directional artist, drawing anime style art style and Sci-Fi style as well :)

But regarding planets.
It is basic knowledge that one day is the rotation period of a planet around it's axis, and a year is the rotation around it's sun (or mother planet?).
But how you call a moon's rotation around it's mother planet?
For example the Luna (our Moon) because of it's slow rotation speed, one moon day is equivalent roughly one Earth month while it's year is the same as well as it needs this one moth to rotate around us.

But let's say there is an Earth type planet which rotates around a Gas Giant in 100 days, while the Gas giant rotates around the Sun in 4 years.
How would such planet use time? Short and Long Years?
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:iconariochiv:
AriochIV Featured By Owner Jul 12, 2013   Digital Artist
The orbit of a planet around a star is called a year, and the orbit of a moon around a planet is called a month. Luna is unusual in that it is tidelocked to Earth (the same face always points to Earth), so Luna's month is the same length as its day.

In your example, the Earth type planet is a moon, so you could say that its month is 100 Earth days and its year is 4 Earth years. The planet's seasons won't change significantly as it orbits the gas giant, as it will still have the same orientation towards the sun.
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:icontzoli:
Tzoli Featured By Owner Jul 12, 2013  Hobbyist Digital Artist
I'm not sure about that.
In those 100 days minimum 25 are in the shadow of the gas giant so it's like one Earth month long Solar Eclipse for each rotation around it.
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:iconariochiv:
AriochIV Featured By Owner Jul 13, 2013   Digital Artist
I don't think that's true. Eclipses last at most for a few hours.
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:icontzoli:
Tzoli Featured By Owner Jul 13, 2013  Hobbyist Digital Artist
Yeah but we are talking about a larger planet creating it's shadow over this Earth type moon
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:icontzoli:
Tzoli Featured By Owner Jun 25, 2013  Hobbyist Digital Artist
looking good!
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:iconobsidiangrey:
ObsidianGrey Featured By Owner Jun 24, 2013  Hobbyist General Artist
Played like a board game or on a digital device?
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:iconariochiv:
AriochIV Featured By Owner Jun 24, 2013   Digital Artist
A PC game for Windows. The developer doesn't have a website for it yet, but hopefully this will be fixed relatively soon.
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:iconobsidiangrey:
ObsidianGrey Featured By Owner Jun 26, 2013  Hobbyist General Artist
Awesome!
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:icondeepchrome:
DeepChrome Featured By Owner Jun 9, 2013  Hobbyist Digital Artist
Oooo pretties. I like this.

One thing that stuck in my mind from some of the RTS I've played - Sins of a Solar Empire, Hegemonia, Homeworld - were the spacescapes, and the planets in them. If I've got to spend hours building an empire in space, the planets and space around them had better look gorgeous. I think it was Hegemonia that did a really good job varying up the light of the stars, and the kinds of planets. (Their desert planets were gorgeous -drools- ) Sins really went the extra step - I seem to recall nebula backlighting? Been a while since I've played either so...

So I think you're on track as far as designing an RTS space environment I'd want to putter around in, looking at all the pretty swirly planets. :D

One thing I really like is your corner illustration - planets developed for agriculture vs planets developed for industry. The idea that they can visually change depending on what tech tracks you take your colonies on is a very cool one. I'm also really liking the variations of planets you've got - and all the connections between them.
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:iconariochiv:
AriochIV Featured By Owner Jun 9, 2013   Digital Artist
The planets are rendered in-game as a shaded globe with several texture layers for night-side lights, clouds, and various forms of visible (exaggerated) exploitation, so I'm trying to get as much interesting visual variety that also conveys game information.

It will be a challenge to make things look right with a sort of hand-painted style that matches the rest of the 2D graphics.
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:icondeepchrome:
DeepChrome Featured By Owner Jun 24, 2013  Hobbyist Digital Artist
Looks like one you'll be able to meet though. I think your concept art here does a good job of working on that variety. And I see a few planet varieties I don't think I've seen in either Sins or Hegemonia, so you've got that going for you too. :D
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:iconalekssandros:
ALEKSSANDROS Featured By Owner Jun 6, 2013
LOVELY!!!!!!!! T__________T I wanna play it NOW!!!!!!!!!
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:iconwminsing:
wminsing Featured By Owner Jun 1, 2013
And by where I mean when will it come out; I know it's still being worked on!

-Will
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:iconwminsing:
wminsing Featured By Owner Jun 1, 2013
Very good and well thought out diagram of how the stars and planet position influences the kind and appearance of the planet. Great stuff. Where is this game!!??!
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:iconariochiv:
AriochIV Featured By Owner Jun 1, 2013   Digital Artist
I believe the current estimate is that it may be ready for some kind of public play early next year.
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:iconarthour:
arthour Featured By Owner May 30, 2013
Awesome drawings, Arioch. I'm hoping, and looking forward to updates on the comic :)
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:iconjonberry:
jonberry Featured By Owner May 28, 2013  Hobbyist Writer
I've always been a sucker for good planet designs. You should almost contact the makers of Endless Space, they could use some of this work!
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