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.

Filter by
Sorted by
Tagged with
0
votes
0answers
48 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 ...
11
votes
7answers
2k views

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 ...
8
votes
4answers
179 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 ...
2
votes
0answers
77 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 ...
10
votes
4answers
2k views

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 ...
2
votes
3answers
82 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 ...
1
vote
5answers
571 views

Will a country ruled and dominated by women work?

I'm writing a fantasy comic, and in my comics, I plan to introduce a country/nation/race, where women dominate everything. Men from this race/nation are submissive to the women. Women have all the ...
5
votes
2answers
221 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? ...
4
votes
2answers
70 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. ...
13
votes
9answers
8k views

One day, China suddenly stops all exports. What happens to the world economy?

I am more curious about the immediate effects on local and global socio-economics rather than the likelihood of the rest of the world declaring war on China or were the other countries would get their ...
1
vote
1answer
76 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 ...
11
votes
5answers
2k views

Chemical propellant free automatic weapons

You find yourself on a world with no gunpowder...don't ask why...or how you know that there is no gunpowder there just isn't any available to you, nor are alternative propellant options available (...
1
vote
1answer
124 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 ...
3
votes
3answers
134 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’...
5
votes
1answer
93 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 ...
36
votes
19answers
5k views

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 ...
13
votes
10answers
3k 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
vote
0answers
51 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 ...
13
votes
10answers
3k views

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) ...
-4
votes
1answer
76 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 ...
2
votes
1answer
110 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 ...
6
votes
2answers
158 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 ...
1
vote
3answers
151 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 ...
2
votes
2answers
164 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, ...
10
votes
6answers
3k views

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 ...
-2
votes
3answers
118 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 ...
35
votes
28answers
12k views

If my world is flat (obviously not possible) how would I explain the edges?

I don't want my world to be infinite, that would be a pain to draw maps for. And I need it to be flat (for a slightly unrelated reason). How would I explain why no one has looked over or seen the edge ...
1
vote
4answers
131 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 ...
6
votes
2answers
118 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 ...
14
votes
7answers
812 views

An enviroment where a bird-like creature can survive on passive feeding

The question about a diet of dust brought up a few creatures that survive on dust, however they were all insect-sized or smaller. This got me thinking about the Blue Whale, which survives on a diet of ...
11
votes
1answer
4k views

What effect would a red sky and/or sun have on plants and animals?

If an Earth-like planet had an older, red sun — or maybe just a reddish sky due to some property of the atmosphere — how would that affect the growth and/or adaptation of plant and animal life on the ...
2
votes
2answers
149 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
votes
2answers
128 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,...
15
votes
8answers
3k views

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 ...
-1
votes
1answer
80 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/...
3
votes
2answers
203 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
votes
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 ...
1
vote
4answers
361 views

What kind of gas would allow a rock to float? And what kind of rock would it be?

Scenario + question: So for the purposes of this question lets so that there is a canyon much like the grand canyon but about 50 miles deeper, so the bottom is always in shadow and it has no ...
2
votes
1answer
108 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
votes
1answer
384 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
votes
2answers
167 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 ...
3
votes
1answer
301 views

Sound From a Super Nova

Let's say there exists an alternate reality from ours that is identical in every aspect save for one. There exists a substance in space that allows for the transmission of sound. Let's call this ...
7
votes
2answers
346 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 ...
2
votes
1answer
258 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 ...
2
votes
5answers
322 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 ...
2
votes
6answers
204 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 ...
0
votes
4answers
268 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 ...
1
vote
6answers
457 views

After evacuation to a new planet, how would a population switch from a barter system to a monetary system with banks?

Okay, context. There's a modern human sub-species (about 9,000) that needs to evacuate earth to avoid genocide from their human counter-parts. They have access to a portal to take them to a new viable ...
-1
votes
4answers
247 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 ...
40
votes
23answers
13k 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 ...

1
2 3 4 5
7