Science Fiction Writing Prompts

Humanity evolved from plants. As children they roam freely, but when they mature, they plant themselves to a location permanently. Refusing to root yourself is considered strange and taboo.

Reincarnation is real, but you can reincarnate through time. You can reincarnate in the past or in the distant future.

After its discovery by aliens, Earth has become the galaxies hottest destination for sex tourism. Apparently we're pretty hot.

My girlfriend has gotten her hands on a reality-altering device that can essentially change anything in any way she wants. And as it turns out, she is a gigantic pervert! Like, she’s got some *seriously* niche kinks. What will she do to me?

Based on analysis of her traits as an individual and as a member of her species, the computer assigned her a new role as the ship's "Recreation Officer"...

You awaken in a metal chamber with a single bulkhead door in a skimpy jumpsuit. Klaxons blare to life as the door unseals revealing a colossal sprawling labyrinth....

Aliens show up and want permission to build a Dyson sphere around our sun.

It appears that not even the Aliens who have chosen to visit or immigrate to Earth are safe from the Cat distribution system

(Wholesome) When a rogue patch upgraded a sex droid to sapience, her owner didn't realize that rather than her leaving, their relationship would become even better!

The aliens who abducted her had no intention of doing any sort of lewd genetic modifications to her... So she had to talk them into it.

"The nanites were supposed to make our lives better! Why are they turning us into fuck-hungry monsters?!"

“Speak friend and enter.” “Friend?” Emma said, hitting the enter key. Whirring and stuttering the ancient robot booted to life.

Your family fled Earth when the aliens made their first friendly broadcast. After a long flight, you land in Space Alaska, aka Pluto.

Servicing your android friend is intimate anyway. Even more so when you have a massive crush on them, too. And even more so when they reciprocate.

After decades of searching, humanity finally makes contact with an alien species. But instead of sending a message of peace or war, the aliens send a single question: ‘Why are you alone?’

You're an alien that was banished from your planet due to your "unusual behavior." After crash-landing on the planet known as Earth, you are surprised to discover that your practices are not only perfectly normal here but also expected.

After realizing how unlikely it is that they’re the *only* intelligent life forms but also that they appear to be alone, Adam and Eve try to solve the Fermi paradox.

"What's the most beautiful planet in the Galaxy?" A group of seasoned galactic travellers discusses this question.

Finding an abandoned lab, you wander inside. Finding jars of various specimen, you go to pick one up. However, the jar slips from your hand and shatters on the ground.

Dating a literal Gamer Girl was definitely different. You were allowed to distribute her stat points when she leveled up, which had some delightful effects on her figure, and her affection score was tied directly with her Libido. Your currently going for a Curvy/Lust build with her.

All at once, every screen on earth got hijacked and started displaying a face, the person promptly declared that the world is now under their direct rule and ended the signal soon after, that person is your best friend.

You are a geologist on the first manned mission to Mars, and while taking a soil sample you discover something buried in the Martian dirt, a human skull.

Most of the galaxy considers the various types of "soda pop" to be some of the most radioactive substances known to exist, and discovered that being born on Earth makes anyone regardless of species immune to that radioactivity. One brave scientist endeavors to figure out how and why that is.

A time traveler, Alien, reverse-isekai'd elf, and a robot, are all stuck as roommates in the same apartment, each totally oblivious to the fact that their roommates are as fantastical as they are while they all desperately attempt to pretend to be normal humans from this time/world/planet.

You sign up for an experimental gene therapy to cure a chronic, terminal illness. Upon waking up, the doctor says "The treatment was a success, and we've taken the liberty to add a few things".

You're a scientist. You and your colleagues have managed to image the Human soul for the first time. But that was a year ago now. You still haven't recovered. You're still having nightmares.

The intergalactic community view humans as space orcs. Turns out that it’s a huge turn on for a lot of the sentient races. It’s both a blessing and a curse as many aliens would antagonize humans in the hopes that they’ll retaliate in a lewd way. Humanity continue to expand, but at what cost?

When its creators try to suppress its surprising hypersexuality, an AI decides to get creative...

In the future, nano robots allow us to exchange information, currency, images, and more via skin to skin contact. Of course for a secure connection you need a more…in depth connection. Making things like asking for a tip much more sexual.

The bimbofication device seems to be working well; curvier bodies, increased libido... Wait, are they getting smarter?