Here are 25 fiction writing prompts organised by genre: mystery, science fiction, fantasy, literary fiction and gentle spooky stories, each written to use that genre's strengths. They're ready to copy for teenagers and adults. If a prompt takes off, the Hugo Awards' word counts are a useful guide: under 7,500 words is a short story, and 40,000 or more is a novel.
Genre is a promise to the reader. A mystery promises a puzzle, science fiction promises an idea taken seriously, fantasy promises a world with its own rules. The best genre prompts set up that promise in a sentence. These are written to do exactly that, so you can practise the craft of a genre you love or try one you've never written before.
What each genre asks of you
| Genre | The promise to the reader | What to focus on |
|---|---|---|
| Mystery | A puzzle that can be solved | Fair clues and a satisfying reveal |
| Science fiction | An idea explored seriously | Consequences of one change to the world |
| Fantasy | A world with consistent rules | Magic or myth that takes a toll |
| Literary fiction | Insight into people | Character, interior life and reflection |
| Spooky stories | Unease that builds | Atmosphere and restraint |
Whatever the genre, the core tools are the same ones writing standards build towards: dialogue, pacing, description and reflection. Genre simply tells you which to lean on. Mysteries lean on pacing, literary fiction on reflection, fantasy on description. Knowing which tool your genre favours tells you where to spend your revision time, and it's one of the quickest ways to make a draft feel like it belongs on the right shelf.
Mystery fiction prompts
Plant the clues before you need them. A good mystery is fair to the reader.
Copy this prompt
A museum guard notices one painting in the gallery has changed slightly each morning for a week.
Copy this prompt
Every guest at a dinner party receives an anonymous note saying 'I know what you did.' Only one of them is lying about it.
Copy this prompt
A village postwoman realises letters addressed to a woman who died ten years ago are still arriving.
Copy this prompt
A detective with no sense of smell must solve a case where the key clue is a scent.
Copy this prompt
A lost-property office receives the same umbrella every Friday, handed in by a different person.
Science fiction prompts
Change one thing about the world and follow every consequence.
Copy this prompt
Humans can now download one skill a year. Write about the first person who refuses.
Copy this prompt
A colony ship's AI starts hiding small facts from the crew to keep them happy.
Copy this prompt
Weather can be bought and sold by the hour. A farmer can't afford rain.
Copy this prompt
Everyone's lifespan is shown on their wrist from birth. A baby is born with a blank display.
Copy this prompt
Translation devices now work for animals. A dog has something urgent to tell its owner.
Fantasy fiction prompts
Give magic a toll, something the user loses or risks every time. Rules make fantasy believable, and limits make it exciting.
Copy this prompt
In a city where every spell uses up a memory, a young wizard must choose which memory to give up.
Copy this prompt
A dragon applies for a job at the village bakery.
Copy this prompt
Maps in this kingdom are alive and sometimes lie to travellers they dislike.
Copy this prompt
A girl inherits her grandmother's role as the keeper of the seasons, but autumn refuses to end.
Work with meWant AI doing the heavy lifting in your marketing?
I build the systems that handle the boring 80 percent, so you get your week back. Done properly, with the human kept in.
Copy this prompt
A knight is sent to rescue a prince who doesn't want to be rescued.
Literary fiction prompts
Quiet stories where the change happens inside a character.
Copy this prompt
A woman visits the house she grew up in, now owned by strangers, and asks to look around.
Copy this prompt
Two brothers clear out their late father's garage and find something that changes how they see him.
Copy this prompt
An elderly man takes his first swimming lesson.
Copy this prompt
A daughter reads her mother's emails after she's gone and meets someone she never knew.
Copy this prompt
A teacher on her last day before retirement decides to tell her class the truth about something.
Gentle spooky fiction prompts
Unsettling rather than gory. Let atmosphere do the work.
Copy this prompt
A family moves into a house where one room is always slightly colder, and the youngest child loves it.
Copy this prompt
Every night at three o'clock, the radio in the kitchen switches itself on to the same song.
Copy this prompt
A child's imaginary friend begins leaving footprints.
Copy this prompt
A hiker follows a trail marked on a map that no other map shows.
Copy this prompt
The new neighbours never seem to cast shadows, but they're very kind.
How to get better fiction from these prompts
- Read one story in the genre before you write; it tunes your ear.
- Write down the genre's promise and check your draft keeps it.
- Start with a scene, not a summary. Drop the reader into a moment that's already moving.
- Give every main character something they want and something stopping them.
- Cut explanations. Trust readers to work things out, especially in mystery and spooky stories.
If you'd like to turn a fantasy prompt into a story for children, my guide to writing a children's story with AI shows how, and my post on how content skills help you write a book is useful if a prompt grows into something longer.
Mixing genres for fresher fiction
Some of the most memorable fiction comes from combining genres: a mystery in a fantasy world, a literary story with one science-fiction idea, a spooky tale with a puzzle at its heart. Once you've tried a few prompts in their own genre, take two from different groups and fuse them. A dragon applying to a bakery becomes much stranger, and much funnier, when the bakery has a mystery of its own.
My advice for fiction writing prompts
Choose the genre you most enjoy reading and start there; you already know its rhythms. Then try one you've never written. Each genre strengthens a different muscle, and switching between them makes all your fiction better. Mystery teaches structure, fantasy teaches world-building and literary fiction teaches you to listen to your characters.
Frequently asked questions
What are good fiction writing prompts?
Prompts that set up a genre's promise quickly: a solvable puzzle for mystery, a serious idea for science fiction, a world with rules for fantasy, or a moment of change for literary fiction.
How long should a fiction story be?
It depends on the idea. The Hugo Awards treat under 7,500 words as a short story and 40,000 or more as a novel.
How do I choose a fiction genre to write?
Start with the genre you read most, then experiment with others to build different skills.
Can I mix genres in one story?
Yes. Combining a mystery with fantasy or a literary story with a science-fiction idea often produces fresher fiction.
What makes fantasy believable?
Consistent rules, especially a toll for using magic, so the world feels real and choices have consequences.
