Science Fiction Writing Prompts

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

Eel-punk. Eels generate 98% of the power required by the world. Megacorps manage breeding programs and sell sterile eels. Today, Joe the Fisher caught a fish that could change everything.

527 upvotes17 comments

The galaxy is on the brink of war between two major factions. In order to prevent it, the two sides secretly chose modern day Earth to become a scapegoat as an imminent threat to the galaxy. However, they underestimated Earth, which is now a rising third power in the galaxy.

526 upvotes61 comments

"It doesn't matter how much of a 'neuroscientific breakthrough' it is. Using arbitrary code execution to re-code a patient's brain into Pong is definitely malpractice!"

524 upvotes7 comments

You and several other scientists agree to be frozen in hopes you’ll have more time to find a cure for a plague that has wrecked havoc on the world. It’s finally your turn to wake up. The others’ notes say you’ve only been asleep for 60 years, but the dust and ruin around you says otherwise

524 upvotes17 comments

You've just been awoken from cryogenic sleep so that scientists and doctors can finally cure your fatal condition. Then you learn it's been 57000 years since you were put in cryogenic sleep.

524 upvotes21 comments

"Why have you created cat girls when we asked you for supersoldiers?" "General, those cat girls are your supersoldiers."

522 upvotes41 comments

Humans didn’t evolve, they were made as a warrior caste for another species. When they didn’t work out their creators dumped them on earth with no tech, now that they have discovered warp travel…

521 upvotes9 comments

When humanity could not find sapient life on other planets for the longest time, they uplifted several Earth animals. Then an alien empire attacked them. Now the descendants of the Emu War are fighting alongside each other.

514 upvotes20 comments

You've just flubbed a summon spell however, you still got *something*. But would someone please explain what an "Nanite Enhanced Semi-Biological Forge-Integrated Combat Android" is....

514 upvotes26 comments

The humans described themselves as warlike, cruel and insane. Turns out the largest issue of humanity the galaxy needs to deal with is their self-hate.

514 upvotes16 comments

You've contracted an unknown disease, and x-rays show it's eating away at your bones. Curiously, even when your limbs have no bones left...you can still walk and use your arms just fine. It's as if the bones are still there.

513 upvotes14 comments

You've found the answer to Fermi's Paradox of "There must be more advanced civilizations than us, so why haven't they contacted us", turns out there's a "Great Filter" that destroys over 90% of civilizations before they can journey to the stars, on Earth, we call that filter "The Internet".

511 upvotes21 comments

"Three days, August 13th, at 21:31 standard time, Earth was attacked by hostile alien forces. We defended ourselves. We did not expect to win. We also did not expect sixteen other species to show up and kick out of the snot out of the invaders."

508 upvotes0 comments

The bipedal species are considered to most ugly amongst the galaxy. That was until "humans" joined the confederation and obsessed with all the bipedal species saying they are "beautiful". You are the only bipedal girl in the intergalactic school, being bullied, until a group of humans arrives.

507 upvotes30 comments

Nuclear weapons have been banned for so long in the a galactic community that most aliens think they’re just fairytales. Imagine their surprise when they see humans using them in a war.

507 upvotes23 comments

Our planet shares the same orbit with Earth- on the opposite side of the sun. We see their lives on the internet and TV, but we’ve never been able to actually GO there.

504 upvotes38 comments

You've been out of the game for years. Retired, have a nice life with a dog. And then you found out. They cloned you! They cloned you and had no idea what they were dealing with and now they want you to "fix" it. Well, you're going to fix it all right!

500 upvotes19 comments

You just joined a crew and found out that they have a human crewmate. You're curious and excited to meet them, given your species look so similar, it's uncanny! Unfortunately, it doesn't go so well.

499 upvotes25 comments

Aliens are trying to eradicate humanity in subtle ways but it always ends up beneficial for humanity

499 upvotes25 comments

The elite 1% of an intelligent alien race sent their workers to terraform the earth into a vacation planet, wiping out humans and any other native life in the process. Unexpectedly, the wrokers rebel and refuse to do their job, having been bribed with this human thing called "affection"

499 upvotes27 comments

In a country were an unbeatable truth serum with a verified 0% false positive rate is routinely used on all political candidates, the revelation that one candidate is completely clean of any misdeeds is considered terrifying by everyone (voters included) instead of reassuring.

497 upvotes14 comments

"Oh for fucks sake, you too? Right, ok, cards on the table. Is anyone here ACTUALLY a human being and not an inhuman creature infiltrating the human race?"

487 upvotes57 comments

You're a dimension-hopper, who can walk through parallel worlds like turning a corner. The increasing number of apocalyptic Earths is really starting to bother you, though

487 upvotes25 comments

You wake up in your quarters, unable to recall what happened the night before. You see your human crew mate, Mark, getting dressed. Before you speak, he raises his hand. “Before you ask, no, we didn’t ‘engaging in activities’ last night, Captain.”, he explains calmly.

484 upvotes37 comments

Over the years of extensive cybernetic augmentation you installed various artificial alternatives to your organs and even added some implants to your brain. You've just been informed that your organic components have all been dead since last week.

484 upvotes33 comments

“Your child is a static. One in a million disorder. They’re unable to shapeshift and will be stuck in their human form for their entire life. Hell of a thing, I’m sorry.”

482 upvotes22 comments

You’re one of the best space doctors known across the galaxies, easily able to analyse and assess any alien’s condition and treat them accordingly. You’ve cured creatures bigger than moons and microbes smaller than atoms, but this next patient has you utterly perplexed.

481 upvotes23 comments

When extrademensional aliens invaded Earth to steal slaves for their empire, they unwittingly brought magic with them. Combat medics were first to discover it with the phrase, "You don't have permission to die!"

477 upvotes36 comments

Until the heat death of universe we will never forgive you," says your alien former lover. "What did I do?" you say. "That you have to ask makes your sin against us even worse." Your next words will determine if humanity goes to war with an advanced alien civilization.

475 upvotes31 comments

Ok, that's it. You don't care what happens anymore. Enough is enough. You take your standard issue time rewinder and set it back 20 mins just so you can win an argument with your wife.

473 upvotes14 comments

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