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.

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6answers
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Organism that can produce water on its own (possibly from air?) not requiring a water source. Is it plausible and if how?

I have thought of a sort of desert planet that has a atmosphere pretty similar to earth and with gravity a little lower which has little to no water source and most of it is empty dry wastelands. I ...
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1answer
109 views

Plants Without Air

On a distant world, the atmosphere is different than ours - there is no oxygen but a high level of C02 like on Mars or the early Earth. This planet is otherwise similar to Earth but slightly warmer. ...
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2answers
97 views

What might make one specific area of a sea calmer than the rest?

This may very well be an easily answered question, in which case I apologize for the lack of challenge, but in all honesty I’m not sure where to start in figuring this out. I have a large sea. It sits ...
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6answers
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Grappling hook which attaches to almost any surface and is actually alive, is it feasible?

wondering the mechanism of how a grappling hook would be able grip onto most surfaces without missing the hit or sliding off. in video games grappling hooks are ropes or chains which when thrown onto ...
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8answers
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Could a world with a extremely bright night sky exist?

How could an Earth-like tidally locked planet with no Moon have a bright and livable night sky? The bluish night sky should look like this: But it should be 1% as bright as Earth's day sky and ...
3
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1answer
123 views

The chosen one is destined to defeat the devil [closed]

Legend says the chosen one will be able to defeat the devil without fighting it. Over the years many brave adventurers have tried and miserably failed taking down the devil with various plans and ...
6
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5answers
205 views

Saving the world by saving an entity

The world is at danger because the death of one singular entity called heart of the world is dying. Copyright 2014-2020 PeteMohrbacher The question is how do I link the death of the heart of world to ...
6
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4answers
121 views

Life points to live again

Life points are creatures spawning in random places around the world, they grow to the size of an apple and resemble hearts made of crystal of various colours. They get their names from the ability ...
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2answers
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Can you naturally grow houses?

I'm Worldbuilding, and in my world, people can grow houses from seeds. My world is not a Fantasy one. Could this theoretically work, and if so, how? (Images by Finnian MacManus) To start the growth ...
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2answers
138 views

Can you combine chromatophores with exoskeleton

I've got an idea of an alien organism that is a powerful predator that shares its environment with extremely intelligent, strong, and dangerous apex predators, and so it evolved an exoskeleton. Its ...
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7answers
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Humans, except they always find the right solution to the wrong predicament [closed]

Two mothers say a baby is theirs, simple solution, split the baby in two so they bot get half! Lost your family? Find a new one! Your husband cheats on you with your friend? Cheat on him too with your ...
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0answers
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How easy would reunification be after Second American Civil War? [closed]

So in a story series I've been writing, it is set in an alternate 21st century where the United States of America reorganized itself into a theocratic imperial military dictatorship (think Gilead in "...
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2answers
190 views

Dungeon-fed civilization - what are the consequences?

So, I'll start with a short summary: I wanted to have magic world with other-than-agriculture based civilization. I gave them magic dungeons. I'm afraid that there are many problems I didn't take in ...
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7answers
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Black Hole Power Plant

I had this idea for my sci-fi book, there's not going to be a central galactic government, very contested little time, but I do wanna pursue this. The more shadowy inhabitants of the center of our ...
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4answers
193 views

Sky of Earth and Seas of Sky

I have a medieval fantasy setting where people live in a vast expanse of giant caves. The lowest level of these caves have many lakes and oceans. Through any of these bodies of water at the bottom ...
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0answers
95 views

Humans In A Fantasy World [closed]

I am currently building a fantasy world that contains humans inside of it, but the problem I currently face or wonder about is what physical differences there might be in my world compared to the ones ...
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4answers
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What would days and nights look like on this cylindrical world?

This is yet another "literal worldbuilding" question, as in, building worlds. Inspired, in part, by this question. What if this world is a very long (effectively infinite) hollow cylindrical cavity ...
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3answers
88 views

How can entities maintain their control of their avatars across dimensions?

Our reality is separated from the god realm through a veil that functions as a barrier. As the physical and metaphysical realms operate by different rules, the veil prevents them from interacting. The ...
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2answers
237 views

What is the tallest mountain possible in any gravitational environment?

In world building it is often interesting to consider extreme landscapes – how tall can a mountain be on Earth for example. But what is the tallest mountain possible in any gravitational environment? ...
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2answers
83 views

The Serina Series: Episode I: Cats

"Serina" is a popular speculative evolution project in which, apart from a long list of fish, invertebrates and plants, the only terrestrial chordate to colonize this terraformed moon is the canary. ...
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1answer
81 views

What would allow a human being to create a rift in space-time and access parallel universes? [closed]

I'm creating a story where there are individuals that can travel to parallel/alternate earths. Obviously this is all fantasy but hypothetically speaking, how would you ground this is in some related ...
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1answer
128 views

What would the job market look like if half the population suddenly disappeared? [closed]

Half of all humans on planet earth one day suddenly disappear, leaving no trace. My question is, how would this affect the job market? First I assume there would be a lot of grieving over lost loved ...
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3answers
139 views

How could human-like aliens survive on Pluto?

I apologize if I continuously ask different questions about different concepts for stories. It’s just that I can never make up my mind on what to write, and sometimes, my ideas change. But anyway, I’...
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1answer
98 views

How extreme can a habitable tidaly locked world be?

I want to create a tidally locked world with a habitable (broadly Earth like atmosphere and biome that humans could breathe and live in) band stretching around the terminator pole to pole. There would ...
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0answers
52 views

Communication Across Planes of Existence [closed]

In a system where there are multiple planes of existence (the center one being ours), I want my human (mostly - not important for this though) main characters to interact with forces from the other ...
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1answer
77 views

What would prevent multiple Trojan horses from materializing in the same space? [closed]

This is a follow up question to this: What would make purity a necessity for an Eldritch being? The barrier separating our realm fro the outer realm is designed to detect and prevent it from foreign ...
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19answers
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What sort of world would help prevent an intelligent species from discovering evolution?

I’m working on a first contact story set in the near future where an advanced alien species arrives at Earth and reveals itself to humanity, but is utterly baffled by the diversity of life that it ...
2
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1answer
116 views

What are possible energy carriers besides ATP?

I'm thinking about designing an alien race. The race is carbon-based and evolved on a world with an average surface temperature between 40 and 60 degrees Celsius. Now, on Earth, almost all lifeforms ...
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2answers
162 views

Life without a bright star?

The main source of free energy that allowed life on Earth to develop was our sun. It bombards the planet’s surface with photons of high energy, which provide activation energy for reactions necessary ...
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3answers
161 views

What strategies would be used in the hypothetical siege and defense of a city between two modern superpowers? [closed]

I've recently been listening to Dan Carlin's Hardcore History. A topic that comes up early on is the extreme changes that War itself went through between the 19th and 20th centuries. The ...
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2answers
166 views

How would humans live in a world made primarily of glass?

Setup: Earth developed in an alternate universe with small oceans and little water. A little before animals first left the oceans and began to walk on land, when all of Earth's land was barren sand, ...
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3answers
121 views

Could a stone age civilization independently figure out about quantum mechanics [closed]

I was thinking of a stone age civilization that figures out how to use Quantum Mechanics. This civilization figures out some of the equations that describe Quantum Mechanics, and comes up with first ...
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6answers
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Can you train primates to perform every day jobs that humans perform today?

I want to know how / if we could train monkeys to do a variety of human tasks. Is it possible to teach monkeys human trades and set them free throughout major cities to do jobs and interact with ...
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4answers
133 views

How can a god that loses its memories in becoming mortal, regain them?

God looked down at his creation, humanity, and was disgusted with what it saw. The race had become so entrenched in hypocrisy and sin that it considered destroying it. However, evil abominations from ...
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2answers
127 views

How will forced memory loss work?

So I'm writing a gag comic about a superhero blessed with a plethora of abilities collectively called "Omnipotence" but with it comes two catches. Everything that is directly or indirectly affected ...
2
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2answers
151 views

What is a good name from mythology for a group of humans who cannot feel pain or emotion? [closed]

I've got a situation where I need a name for a group of humans who cannot feel any pain or emotion (Kinda like CIPA, but without emotion as well). These have been stripped off them by a supernatural ...
3
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2answers
133 views

Could the earliest life on Earth have traveled through a wormhole billions of years ago into an alternate dimension and evolved independently? [closed]

So it's fairly common knowledge that the first signs of life on Earth were in the Archean eon, when the crust started to cool and continents started to form. Life arose around 3.7ish billion years ago,...
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8answers
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Do I have to rename all creatures in a new world? [closed]

I'm building a whole new world for a table top RPG so I don't want to completely alienate my players from the world. But if I want to include horses or whales, do I need to reinvent the wheel and make ...
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10answers
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Planet with a surface area that’s 90% water or more?

I’m thinking that there will be one small continent, about half the size of Australia or a bit larger. The single, massive ocean is inhabited by an aquatic humanoid species (yes, think mer-people) ...
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1answer
84 views

Post-apocalyptic war between two empires isolated for 2 centuries with a vast ocean.How would it play out? [closed]

In fictional world, a nuclear apocalypse has destroyed old nations and ravaged civilization. Refugees (and colonial settlers from before) from the mainland fled to unaffected Africa and North America/...
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2answers
221 views

Possibile explanation for a [somewhat] realistic floating continent scenario?

I'm writing a story that takes place in a world where people live on continent-sized chunks of earth (basically the size of tectonic plates) suspended in the air, left over from some cataclysmic event....
3
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2answers
230 views

Could sound be recorded by door panels and later replayed?

In my novel, a character makes the claim that sound can be recorded by the panels in a door. The door panel vibrates with sound, according to him, and those vibrations are recorded analogically, very ...
2
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1answer
109 views

Creating Border in Box-like World [closed]

I'm creating a world in outer space. The people live in a box-like structure because outside the planet is uninhabitable. In this box, the houses are built in rows of two or three with 5 columns, in a ...
11
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1answer
395 views

Defining a superfluid ocean

I'm working on a world where water acts as a high-temperature superfluid. Specifically, H2O's lambda point is above its boiling point. Thus, all liquid water on the planet behaves as a superfluid. It ...
4
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2answers
171 views

How do I convince the general population using large monsters is the most efficient means of protecting our compact cities?

Context Monsters are a bit of a problem on this world. Though most pose a marginal threat and are categorized as vermin, others represent a serious risk to major population centers as a consequence ...
2
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1answer
259 views

How can my story take place on earth without refering to our existing cities and countries [closed]

My story shall take place on Earth with the human race as the dominant species. I imagine the technological and scientific progress to be 10 to 20 years in the future from now (our current real life ...
7
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2answers
359 views

What levels of Argon and Neon (along with other factors) are needed to make the entire sky orange and sustainable for life?

I've read several sites and even questions on here where the sky would appear almost white or light blue if it orbited an orange dwarf star. However, that is if the planet has the same atmosphere as ...
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6answers
209 views

Life on land, sea, and what else? [closed]

On earth there are two main media that support complex animal life. One is the sea, with creatures living both on the seabed and the water; Another is the land, with animals that live both on it and ...
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4answers
272 views

What modern things that are cheap can be good to sell in a fantasy medieval world at high price [closed]

I have my protagonist go to a fantasy world that is locked in their medieval era like late 1300 early 1400. My protagonist need money to travel, so what kind of modern invention, a material that is ...
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4answers
250 views

Can pirates still exist and be cool in a near future? [closed]

I am writing a novel. It's 2050 and there are pirates who use technology integrated in their boat. They need internet in order to do it. This technology can do things like avoiding storms or hack ...

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