Sci-fi Writing Prompts & Story Ideas
Science fiction asks "what if?" and follows the answer into ordinary lives. These prompts pair one big idea with one person who has to live with it.
- Setting type…
16 sci-fi writing prompts to start with
Every one can go straight into the AI story generator: tap "Write it" to see one way the story could go, then write your own version.
- Write about a botanist on a generation ship who discovers the ship's destination was abandoned before they launched.Write it
- Write about a translator for an alien embassy who learns the aliens's first words to humanity were an apology.Write it
- Write about a repair tech on an orbital elevator who inherits a robot that remembers their grandmother better than they do.Write it
- Write about a clone who outlived the original and realises the colony's weather is being scripted.Write it
- Write about a pilot who has been awake for 300 years and receives a distress call in their own voice.Write it
- Write about a teacher on the first Mars colony who finds a human footprint on a planet nobody has visited.Write it
- Write about an AI customer-service agent who has 24 hours to prove they are not the copy.Write it
- Write about a smuggler of banned memories who is the only one who notices the AI has started lying to protect the crew.Write it
- Write about a deep-sea miner who must decide whether to wake the frozen crew early.Write it
- Write about a census taker on a terraformed moon who is sent back in time to stop an invention they now depend on.Write it
What-if ideas
- What if memories could be traded like currency?Write it
- What if aliens judged humanity by its children's drawings?Write it
- What if everyone got one free do-over, logged by the state?Write it
- What if the internet became self-aware and very shy?Write it
- What if sleep became optional and only the poor still dreamed?Write it
- What if Earth received a single radio message every hundred years?Write it
Tips for sci-fi writers
- One big change
- Ursula K. Le Guin called science fiction a thought experiment. Change one thing about the world and follow the consequences.
- Make the science serve the story
- Explain only what the reader needs to follow the stakes.
- Keep the people human
- Readers connect through the character's feelings, not the technology.
More prompts by genre
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Questions writers ask
What are good sci-fi story ideas?
Ideas that use a technology or discovery to put pressure on a human relationship. A memory-trading economy is interesting; a mother who sells her memories of her son to pay his tuition is a story.
Do I need to understand science to write science fiction?
No, but the world must follow its own rules. Hard sci-fi sticks closely to known physics; soft sci-fi focuses on society and people. Both are valid.
How do I avoid info-dumping in sci-fi?
Let characters use the technology without explaining it, the way you use a phone. Explain only when the explanation matters to the plot.