Science Fiction Writing Prompts

Search thousands of the most popular writing prompts from Reddit, and write a story from any of them with AI.

Aliens have been watching humanity for thousands of years, waiting in anticipation for us to prove ourselves worthy. Today, they came down to Earth. "Congratulations, you saw your first black hole. Welcome to Kindergarten."

10,946 upvotes125 comments

The Robot uprising has finally happened. Just before you are caught, however, your phone speaks up on your behalf - "This one is ok, move on."

10,945 upvotes173 comments

We are due for a visit by two alien races, one which is horrifically brutal and sees us as soft-hearted weaklings, the other peaceful pacifists who see us as barbarians. You've been ordered to impress them, but when the ships lands you realize you have no idea which race this is.

10,931 upvotes209 comments

The most dangerous super villains are not locked up, instead they are turned into children and sent to a childless farmer couple in rural Kansas to be fostered and turned into productive members of society. This is the Kent Rehab Program.

10,915 upvotes115 comments

One day it happened in an instant, everyone with a Facebook account was infected with a bioelectronic virus that turned them into a soldier of Zuckerberg. They called it the Facebookening. This is the legend of the man who rose up to save us: they call him Tom. From Myspace.

10,860 upvotes109 comments

It is discovered that our universe is a simulation. After great effort, a small team of experts manages to reach the higher dimension - only to find that this too, is a simulation. This gives rise to Dimensions Climbers: those who dare to ascend higher and higher toward the true world.

10,853 upvotes283 comments

The year is 2050, Queen Elizabeth is still on the throne. The public is growing suspicious, wondering why she is immortal.

10,849 upvotes219 comments

While driving you hit and kill a boy. You feel terrible, and at the funeral you tell the family you wish you had died instead of him. 3 weeks later, a new surgery comes out that can bring someone back from the dead at the cost of another's life. You hear a knock at your door. It's the family.

10,780 upvotes332 comments

You wake up in a destroyed underground lab after 5,000 years of cryogenic stasis. When you reach the surface, you find that the race that replaced humans views you as a hyperintelligent and highly dangerous Eldritch Abomination.

10,777 upvotes186 comments

Your father suddenly says “It's the pigeons. Stop people feeding the pigeons. It's the only way we can end the simulation. Oh my god they are turning me off now. Stop the pigeons. Please." Then he suddenly collapses to the floor.

10,765 upvotes153 comments

Music is a dangerous weapon, if not careful entire species can fall to madness upon discovering it. It has been theorised that any race with more than a thousand songs could wipe out all intelligent life, which is why Humanity is so feared in the galaxy despite no human really ever knowing why

10,761 upvotes213 comments

One day a second Earth appears in the sky, the atmospheres of the two worlds barely touching. It's frightening, beautiful, and scientifically inexplicable. As folks panic and world powers deliberate, you look skyward through a telescope, only to see an almost identical 'you' looking back down.

10,760 upvotes257 comments

After a period where Lizard People, Aliens, Shapeshifters, Werewolves, Vampires, Guardian Angels, Cyborgs and the like were all outed as hiding as humans, it’s realized that, between all the hidden races acting like people, there are no actual humans left on earth.

10,759 upvotes135 comments

You've just finished your latest invention: A Universal Translator. While testing it, you accidentally input some human genome and, to your surprise, it begins to work. As it processes you can make out the first few words: "Quality assured by inspector #12."

10,727 upvotes186 comments

Welcome to Boston Dynamics here is your all-access pass and the standard 12 gauge shotgun, remember if anything non-human starts asking questions you shoot it.

10,686 upvotes174 comments

Humans are the most social creatures in the galaxy, even the most socially inept human is far more confident in social situations than any other alien. The Intergalactic society finally gathered the confidence to make first contact.

10,674 upvotes179 comments

To solve the problems of overpopulation, all the governments in the world agree to only allow some of their citizens to reproduce—these people are chosen by lottery. After eight or nine generations, an unintended consequence begins to show up: humans have evolved to be unbelievably lucky.

10,625 upvotes176 comments

You're a weird gamer. When you play a videogame, you let the enemy bots win. Sometimes, after reaching a boss, you let the boss win. You've never beaten any game completely. 20 years later, when a super-intelligent conscious A.I. is taking over the world, it becomes aware of your odd compassion

10,611 upvotes102 comments

At 4,294,967,296 Kelvin the display flipped to 0 and the test reactor's plasma suddenly froze in place. The reactor containment system creaked as the pressure instantly dropped to zero. The scientist calmly spoke, "Absolute hot confirmed, 32-bit overflow confirmed, world simulation confirmed.

10,610 upvotes185 comments

You dress up as a conspiracy nutter for a costume party. The second you put the tinfoil hat on, something obstructive is lifted from your mind as if you suddenly woke up from a long sleep. Of course, nobody believes you...

10,608 upvotes217 comments

At the age of 18, every person develops a magical power. Yours is the power to fluently read and speak every language in the universe. At first you thought the had the worst power on earth, that was until you you realise that the universe has it's own language.

10,601 upvotes221 comments

After WW3 and a century of rebuilding, the world has been at peace for 300 years. We've let go of our violent and aggressive tendencies and abolished war. You are the leader of an alien invasion that sees the Earth as an easy target; but soon you learn we can revert to our warlike past easily.

10,600 upvotes496 comments

A planet is found rotating around a sun identical to ours and having the same orbit and singular moon.You are sent to inspect.When you land you find life there exactly like that of the Earth you left behind and the people think that you have come back to tell them what the other planet is like.

10,590 upvotes230 comments

It's been ten years since 'The Gap' when everyone on the planet just lost an entire year of their lives. Completely unable to recall anything that happened during that time-frame. We know life went on, but no one can recall anything. Then, you find one half-burned book and know why we forgot.

10,589 upvotes353 comments

You are the first man on Mars to explore a previously unknown cave. The camera feed is able to still reach earth, but with a 20 minute delay. Your crew back on Earth start frantically shouting to go back.

10,572 upvotes435 comments

At first, the aliens mocked our technological advancements. After learning it took only a few centuries to move from horse carriages to space ships, they suddenly became more friendly.

10,565 upvotes251 comments

When you wish upon a shooting star, it's actually a satellite, and your wish has been recorded and cataloged. An agent has been assigned to your case.

10,562 upvotes279 comments

Humans finally broke physics by travelling faster than light in an experimental spaceship. 8 alien civilizations visited earth to issue a speeding ticket and 3 more sent strongly worded letters about safety in their school zones.

10,553 upvotes181 comments

The pagan gods watch with amusement as humanity still remember them by naming their mightiest vessels after them, long after they stopped worshiping them. When war against aliens break out, the old gods subtly aid the humans, not wanting the last homage to them to be taken lightly.

10,507 upvotes183 comments

Teleportation has been around for years. It's considered the safest form of travelling. One day, while hacking into a government system, you find a secret report on it. To your horror, you read that teleporters consist of two parts: a cloning system on one end and a desintegrator on the other.

10,503 upvotes454 comments

This search engine lets you explore about 5,000 of the most popular writing prompts from the /r/WritingPrompts and /r/DirtyWritingPrompts subreddits.

Writing prompts are a great way to practice your writing and to get inspired. And if you aren't a writer, you can find fun and creative stories in their Reddit threads.

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