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Questions tagged [alternate-worlds]

For questions about worlds other than Earth that are significantly different. This could be a water, ice, barren or other planet. For questions about planets similar to Earth with specific differences use the *earth-like* tag.

1
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1answer
57 views

Creating a Matryoshka Shell World: Sectioning

In my previous two questions regarding temperature regulation and Rotations I set up the idea of creating a multi-layered shell world consisting of planetary crusts stuffed inside one another creating ...
34
votes
21answers
9k views

Make slimes great again, but how?

Slimes are seen as merely base-level enemies which don't really challenge the heroic main character, the Chosen One. My question is how to make slimes incredibly powerful without using magic. They ...
24
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27answers
18k views

A guy asked me to kill 15 trolls, how do I prove that I did it?

In my world there are adventurers who are squeamish about getting blood on them. Trolls are commonly hunted by adventurers. What trophy can my squeamish adventurers collect from these trolls, and not ...
7
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10answers
3k views

Cryomancer, combat style

Cryomancy is cool, ice is cool and ice mages too. But does it actually hold any utility other than keeping your food fresh, specially martially wise(?) How could an individual with ice magic powers ...
5
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4answers
198 views

Creating a Matryoshka Shell world: temperature regulation

In a galaxy far far away, during a fit of inspiration for a super massive marvel of technology, the Imperator dedicates an astounding 10% of energy and materials from his civilization's dyson sphere ...
4
votes
0answers
81 views

How much longer would it take to reach technological parity without access to energy dense resources like fossil fuels to bootstrap development? [closed]

If the only difference in our hypothetical world is where fossil fuels like coal and crude oil are nonexistent, the advent of an analogous Renaissance Era, subsequent Age of Enlightenment, and ...
32
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17answers
11k views

How to defend when attacked by an avian species?

Bird people are humanoid creatures with a wingspan of 4 meters, they are as tall as humans and the fittest of them weight 72 kilograms or slightly less, so they are quite lighter than the average ...
1
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2answers
274 views

How to remove the limit? [closed]

Most role playing games have an upper limit to how strong a character can become usually by means of a level limit or item power limit, players simply reach a point where no matter what they do they ...
6
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5answers
3k views

Arms without wrists

The human hand can be flexed at the wrist, extended and even abducted or adducted while the forearm can also be twisted in supination or pronation giving the illusion of the wrist twisting. All of ...
15
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2answers
3k views

Elves have alcoholic blood

From further investigations I see that someone came with an idea that gives support to my theory that elves don't have body fat. Their idea was that Elves store their energy as ethanol in their ...
44
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15answers
12k views

How could elves survive without any fat cell in their body?

Have you ever seen a fat Elf? I haven't, and I think there's an unexpected reason. You see, Elves aren't really the best workers or at least working the land and cultivating food is not something ...
3
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3answers
374 views

Magical prosthesis merchant [closed]

As a prosthesis crafter things are going really bad with the new trend of healers regrowing wounded limbs. Apparently for some sick reason people actually prefer their body parts to be made of real ...
6
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1answer
87 views

Photosynthesis analog, plausible?

So on a planet with a chlorine based atmosphere and only a small amount of oxygen, here is my proposed mechanism for chlorine based photosynthesis. Carbon tetrachloride, since it is a liquid at 70 ...
-4
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1answer
87 views

New Hologram World with touch and feel, Possible? Land, Water, Fire, Air, Sky with touch and feel Hologram? [closed]

I'm curious if it's possible for humans to create a Hologram World. Atmosphere for Hologram World: Touch and feel for all living and non living objects in the world Living Hologram objects which ...
2
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3answers
122 views

How would a species in one dimension with its own properties go to another dimension with slightly different properties?

In my world, I have three dimensions, each of which have their own special properties. From each of these three dimensions come a master race of said dimension: From the first, the master race is a ...
0
votes
1answer
70 views

What circumference would a no season temperate climate planet have

Imagine a planet, 3/4 water and 1/4 landmass. No axis tilt so the climate is moderate throughout the year. IE peak temperatures at 100°F at equator. It orbits a sun about the size of ours and has a ...
8
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8answers
1k views

How can I explain tree-like creatures that are only active in the cold of night

In a world close to ours, on a planet, intelligent "Ents" or tree-like creatures live. The problem is, the creatures become dormant during the day; they "hibernate" when the sun is up, which heats up ...
5
votes
1answer
124 views

System consisting of a Super Jupiter (10 Jupiter Masses) and several earth-like moons

I have created a planetary system consisting of a Super Jupiter (10 Jupiter Masses) and up to 8 Earth Sized/mass Moons (on average) and now I wonder if it would be stable. I already tried to create ...
0
votes
1answer
120 views

Scifi world without cars, planes or tanks [closed]

The world is at a technology level where it is capable or interplanetary travel. What changes can be made either to the planet or to the physics that could prevent them from ever creating cars planes ...
12
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4answers
2k views

Simulating gravity in a gravity-less universe

In my fantasy universe, there is a disc-shaped world that has a flat surface that has roughly the same atmosphere as Earth (see this); the atmosphere moves along with the world. There is no gravity in ...
0
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3answers
215 views

How plausible are the terrain and land-forms on my fantasy map?

You might have seen me ask a few questions the last few days. Basically, I'm just looking for advice on how plausible this (very early prototype) map might be. Disclaimer: I unfortunately know rather ...
2
votes
3answers
170 views

What should the size of my moons be?

(Not entirely sure if this is the right place to ask this but hopefully I'm right!) I'm writing a novel and the planet this novel takes place on has two, twin moons of approximately the same size. ...
1
vote
3answers
140 views

In a world where the four seasons reflect the four elements, what is the season of Earth? [closed]

In one world I am building, the four seasons are composed of the four elements. It would probably go in this direction: Water>Earth>Fire>Wind>Water ...
2
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2answers
78 views

Looking for ideas for a world that requires some earth based mineral to be released into its atmosphere to render it non toxic to life as we know it,

Im busy wrtiting a Space Opera and was going to utilise the "hypothesis", or whatever you call it of an ancient civ mining gold here and utilising it to disperse into its atmosphere, in turn either ...
28
votes
13answers
8k views

Medieval ways to tell time, without a sun or stars

I am looking for ways to tell time when the sky is completely blacked out all the time. I am aware of nails and other metal objects inserted into candles. Due to vegetation dying due to this calamity,...
13
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6answers
781 views

Atlantis and Sewage

How do underwater cities (with aquatic human-like citizens) handle sewage? What type of technology would be possible to use underwater in order to take care of the mess?
1
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0answers
95 views

If test subjects inside a lab-experiment-universe figured out how to use the Help Desk, what form would the technology take? [closed]

A technologically advanced non-humanoid species discovers trans-universal travel and use their (relatively new at the time) universe-hopping tech to escape a world-killer asteroid, taking with them an ...
1
vote
6answers
250 views

How could it be possible for an entire region of space to be filled with Earth like planets?

Ok, I get it, me dumb, you smart. Only smart questions allowed. In any case I'm going to leave the question unaltered in case some others might get something out of the answers. Thanks to everyone ...
0
votes
0answers
59 views

What would happen if the speed of light were changed? [duplicate]

In a gist, I'm curious to know whether or not a change of the speed of light would present any detrimental effects on the structure of the universe as we know it. Would stars and celestial ...
7
votes
1answer
162 views

What sort of habitats could exist Pre-Zanclean Flood which formed the Mediterranean Sea?

There is a lot of information on drying up a Mediterranean sized depression. However, there is not a lot of information on drowning such a large area or what sort of habitats could exist before the ...
0
votes
1answer
206 views

What could be the energy source of a sentient, supermassive biological entity on an ocean planet?

In exploring the xenobiology and design for an entity (Entity X) in my fictional universe, I wanted to raise the viability of an organism that is so massive, it is visible from the planet's upper ...
4
votes
0answers
145 views

Are dreams a good place to begin world building? [closed]

I know this seems obvious but I wish to know I would like to say that I am quite a vivid dreamer, and it may seem truly obvious that dreams are where many worlds are born, such as Tolkien's Lord Of ...
0
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1answer
127 views

What is the concentration of oxygen at higher pressure that humans can adequately tolerate? [closed]

I am thinking of a scenario in which the protagonist travels to a world relatively similar to the earth, but with certain differences with respect to the atmosphere, specifically its atmospheric ...
0
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2answers
76 views

How big would be a planet with a fifth of Earth's gravity? [closed]

First of all, I want to make clear that I don´t know how to calculate the gravity of a planet in m / s². Starting from there, I don´t know any formula referring to this knowledge and that is why I am ...
4
votes
1answer
233 views

How would lower gravity affect aging in humans?

Aruani is a planet that possesses a fifth of the gravity of the Earth. Humanity migrated to this planet 6,000 years ago and terraformed it to make its atmosphere suitable for human life. Would it ...
1
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3answers
208 views

If a species of dolphins were developed with a few tentacles, what type of society would they build? [closed]

One of the most special things about humans compared to other animals is our industriousness. We have intelligence and we are able to make use of it. I was wondering if Dolphins, widely considered to ...
4
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5answers
304 views

Swimming in the rain?

This question is inspired by salmon swimming up waterfalls. I am aware that it is an entirely different thing, but I felt that it was worth mentioning in understanding the question. “What would need ...
22
votes
10answers
5k views

How to prevent your enemies from digging under you?

So, my world is a sphere (roughly) within hyperbolic space. Since the surface areas of spheres in hyperbolic space grows exponentially with radius, it has the same surface area of the Earth (indeed, ...
10
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10answers
2k views

How could two alternate realities “blend” at a single point in space time?

From: https://en.wikipedia.org/wiki/Multiverse The multiverse (or meta-universe) is a hypothetical set of various possible universes including the universe which we live in. Together, these ...
1
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3answers
100 views

What would be the effect of a world with much less water? [closed]

Say a world has, instead of about 70% water (earth), only 25% water. This would be in the form of one ocean, and all the rivers and lakes. The land has about five mountain ranges, and the planet is ...
2
votes
2answers
162 views

Could a water-world planet with tides that create land support human civilisations?

If we lived on a planet similar to Earth with the same lengths for day and night - but the entire planet was covered (at some point in the year) by water, could civilisations exist and prosper as they ...
1
vote
0answers
238 views

Is segregation inevitable in my unorthodox prison world? [closed]

I came up with this idea of creating this world, where the worst of the worst of a fantastic non-magical world are sent to this prison "realm" which keeps expanding chamber by chamber. The story ...
1
vote
1answer
85 views

Consequences of humanity beginning its roots on another continent? [closed]

I think it is commonly known that Africa was the "birth-continent" of modern humans. What (if any) sort of difference might we see of humanity uprooted from say ... South America? Or Australia?
4
votes
1answer
235 views

How would romance change in an Aspie society? [closed]

I'm curious about this, as I was recently looking through a question titled, "Wrong Planet, What would an Aspergers' planet be like?" dealing with a society of individuals with Asperger syndrome. ...
-1
votes
5answers
172 views

Possibilities for an orange 'mystical' element [closed]

I use element not in the periodic table sense, but fire, air, water, etc. I am trying to create a world with 6 main elements, based on primary and secondary colors. Red (fire/heat), purple (air/...
7
votes
2answers
122 views

What stars and composition of gases should my planets have to have a sky for each colour in the rainbow?

There are seven planets, and each one has a different coloured sky. One has red, one has orange, all the way up to indigo and violet. Of course, they don't have a sky this colour all the time, but ...
54
votes
11answers
9k views

How could mushroom/fungi forests be possible?

I am currently working on a setting which is fantasy but based around a soft approach to speculative biology. It is a tidally locked world with the habitable region based around the terminator ...
2
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5answers
195 views

What legal action will be taken on me if I kill the alternate myself from other reality? [closed]

so another me from alternate reality comes to meet me and I had to kill him for some reasons and I'm caught by the police. Following scenario takes place in US and our world is unaware of alternate ...
0
votes
1answer
274 views

How would life be on Earth if the Sun was replaced a binary star system? [closed]

Assuming an identical Solar system except for the strange sun(s) and that the binary star system's barycentre coincides with the Sun's centre of mass mass of the combined star system is equal to the ...
0
votes
1answer
143 views

How would the world react to a dragon like species appearing? [closed]

The species, in general, is large, the minimum size being the size of a large truck. The largest size it can get is unknown. The creature appears to defy laws of physics we known as well(so, if the ...