Science Fiction Writing Prompts

You invent a machine that shows the lives of the now-dead if they were given a little more time.

You and your team managed to create a fully fuctional interdimensional transporter that can travel to other universes using a six-digit code. You decide to head to universe 177013 first.

A galactic realtor is giving a tour of brand new planets in artificially created star systems for the infinitely wealthy. They proceed to go over the amenities for the available planets as well as the policies for the System’s HOA.

You figured out that you have a very special ability. Your cum can breed any humanoid. So you were conscripted to the Monster Girl Preservation Society™️, to help endangered monster girls reproduce.

The abandoned pleasure bot factory, has a bot restrained in a display case. It seems to still be active, however the sign read “…en powered” the first few letters faded from time.

The day started out normal here in Britain, at least until that bright light and earthquake. Now all satellites are down and the emergency radio broadcast keeps saying the navy keeps seeing people dressed as Romans and Gauls on the french coast. Did the Whole of Britain really time travel.

When you are drunk you can temporarily go back in time. Only when begin to sober up you immediately teleport to your new reality. Tonight you didn’t mean but got not only drunk, but way drunker than you wanted.

You woke up this morning to find your wife acting strangely. Her movements and speech are unnatural. You attribute this to fatigue, but by evening your suspicions grow stronger. Eventually, you notice a pair of tentacles sticking out from under your wife's T-shirt.

"Yo, dudes! The hivemind is pretty chill! Maybe you can like join it or something."

When her human boyfriend invited her to visit earth for one of his species' spring festivals, she was delighted; however, she wasn't counting on the sight of dozens of brightly colored eggs everywhere kick-starting her species' breeding instinct.

Your shipmates are incredulous when you tell them humans have no mating season, and are always ready to mate. A few of them seem pretty interested, and have been asking some very... comprehensive questions.

Your son went missing when he was 5, and no one believes a strange portal took him. As the only suspect, you went to jail for 30 years. But as you are released in front of at least a hundred people, your son appears from a portal. He's still 5, but also looks like he lived a thousand years.

Every time your rich friend comes back from vacation, he talks in weird slang. Over the last 10 years, you have come to suspect that he is actually a time traveler.

The year is 2050 and some weed strains have grown strong enough to unlock superpowers within people for the extent of the high. After finding 4 vapes, you and your 3 best friends are trying to "Obtain" more of this government-controlled weed.

What happens if you put a werewolf on the moon?

You are a galactic journalist attending the trial of an entire species accused of unprecedented selfishness. As the charges are listed, you expect the worst. But as you listen, you start to realize that their "crimes" sound more like acts of extraordinary kindness

"We are superior to them, but they are our masters?"

In an alternate reality, humans live significantly longer than 100 years. But their bodies keep ageing in unpredictable ways, and their minds evolve too. But what's after late adulthood? And what's after that? Behaviors of humans who have lived for longer become increasingly irrational.

And just like that: One day, they stopped coming... The last two I killed looked like children as well. Even from a different species, that much was obvious. But now, why do I feel so bad? Like, I did what I had to, right? There was no other feasible option…

Your ancestors were the crew on humanity's first interstellar colony sleeper ship. Or rather, it was a sleeper ship for the PASSENGERS! For the crew, it's a Generation Ship.

The year is 3050. You work as an operator for a massive trash compactor with only one order, “Start the machine every hour or you’re fired”. You have 1 minute till your next compression when all of the sudden a person falls in.

You are a time traveler hunting down another time traveler taking shelter in the old west. You enter a saloon, looking for the suspect. The piano player, noticing your entry, smiles and begins to play "Smooth Criminal." You have found your target.

Humanity was terrified of the alien invaders who effortlessly withstood of Earth’s weapons. Now it is revealed that are not invaders, but mere vacationers.

So it turns out, human cum is extremely addictive to aliens, this comes to point when your alien crew mates find out you’re human.

A supervillainess agrees to be part of a potential super hero breeding program in exchange for a full pardon; to her surprise, horror, curiousity and high standards, her pregnancy partner is to be her superhero nemesis.

By alien standards, humans are hot as fuck. And it is a pleasure to get busy with any one of us.

Some employees at a company discover that the HR director isn’t human.

Here you are. Twenty years to the day. He descends in a golden light. You flick the safety on your gun.

It has been a long, long time since two alien civilizations had declared war on each other, and fired light speed missiles at each other. They have since developed FTL technology and made peace, forgetting about their weapons. Today, their missiles arrive at each others planets.

You were kinda curious how it felt to have a penis... what you didn't expect was to transform during the night... and to top it off... you didn't even transform into a boy. you just grew a penis above your vagina... what's worse is that your female friends were visitting for a slumber party.