50 Fantasy Writing Prompts to Spark Your Imagination

Most fantasy writing prompts fail the same way: they hand you a world but no problem. A cursed forest is a setting. A cursed forest that grows by one tree every time somebody lies, three miles from a royal council chamber, is a story.

The fifty below are written the second way. Each gives you a situation, a constraint that closes off the easy answer, and a line telling you which scene to open on. Paste one into an AI story generator or use it as a cold start for your own draft.

They are grouped into high fantasy, dark fantasy, urban fantasy and magical realism, fantasy romance, and myth and worldbuilding. If you write outside the genre as well, our companion set of short fiction prompts uses the same structure across science fiction, mystery and literary drama. To develop any premise before you draft it, Chat Smith lets you interrogate it in conversation first.

Fantasy has a specific failure mode: the worldbuilding gets interesting and the story never starts. A prompt earns its keep by making the magic inconvenient for somebody in particular. That is the difference between a real premise and an AI idea generator list you skim once and close.

• One rule, stated plainly - give the magic a single mechanic and let the plot come from its cost. Three magic systems and no constraint produces a first chapter, not a story.
• Somebody who cannot leave - a character with an exit is a character with no story. Name the obligation, the debt or the deadline.
• An entry point - decide which scene to write first, so the session does not turn into an afternoon of drawing maps.

Kings, prophecies and old magic. At short length the trick is to keep the world implied and the decision explicit.

1. The egg in the barn

A tenant farmer's daughter finds a dragon egg in her family's barn. The law is unambiguous: harbouring one is treason, reporting one forfeits the farm. The harvest inspection is in nine days. Write the nine days.

2. The crown that whispers

The royal heir's crown has begun whispering the secrets of every previous wearer, and most of them were murderers. He is due to be crowned at dawn and cannot explain why he will not wear it. Write the coronation.

3. The oracle who lies to both

Two rival kingdoms consult the same oracle, and she has lied to both for thirty years to keep the peace. A new king wants proof of her accuracy. Write the audience where she has to choose which lie to abandon.

4. The wizard who swore off magic

The last wizard in the realm swore never to cast again after what happened, and now works quietly as a cooper. A plague has reached his village and nobody there knows what he is. Write the week he spends not helping.

5. The soul-drinking sword

A knight's sword absorbs the soul of everyone it kills, and after forty years the blade is more crowded than the battlefield. She has one duel left, and the souls have started arguing. Write the duel.

6. The lying forest

A cursed forest grows by one tree every time a lie is told within its borders, and the ruling council meets three miles from its edge. The treeline reached the outer wall last spring. Write the session where somebody finally says so out loud.

7. The water family

One family has controlled a desert kingdom's only aquifer for six generations, and this morning it ran dry. They have perhaps three days before anyone outside the household finds out. Write the three days.

8. The resurrected villain

A scholar mistranslates one line while transcribing an old myth and accidentally restores its villain to life. He is polite, disoriented and eight hundred years out of date. Write their first conversation.

9. The unwilling vessel

A forgotten god wakes every thousand years inside a chosen body, and this time the body belongs to a woman who has spent her life avoiding attention. The god needs her cooperation and cannot compel it. Write the negotiation.

10. The storm that edits history

A magical storm rewrites one historical fact every full moon, and only the kingdom's archivist notices because she keeps a private copy nobody knows about. This month it rewrote her own family. Write what she does with the copy.

Keep the map out of it. If a prompt tempts you into naming five kingdoms before the first scene, you have started writing an appendix.

Dark fantasy works on cost rather than gore. Each of these puts a price on something the character has already been doing for years. If you want a second turn before the ending, an AI plot twist generator is a reasonable place to test options, though most of these already carry one.

11. The hundred-year night

The sun has not risen in a hundred years and nobody alive remembers why. A young lamplighter finds a written account in a sealed cellar and learns the reason was a choice, not a curse. Write her deciding whether to tell anyone.

12. The necromancer's affection

A necromancer falls in love with one of her own creations, who is kind, patient, and animated entirely by her will. She has no way of knowing whether any of it is his. Write her testing it.

13. Memories instead of blood

The gods have stopped accepting blood sacrifice and now require memories instead. The village priest must decide which memory a good harvest is worth, and he is the one who has to give it. Write the ritual.

14. The soul-priced wish

Every wish granted at the shrine takes a fragment of the wisher's soul, and the town's most generous woman has spent twenty years wishing on other people's behalf. There is very little of her left. Write her last wish.

15. The festival of dying

A kingdom holds an annual festival in which everyone dies at dusk and returns at dawn. This year one child does not come back, and the celebration is already underway. Write the morning after.

16. The tired monster

The monster under the bed has frightened the same family for four generations and is exhausted by it. The current child is not afraid of him and wants to talk. Write the conversation.

17. The healer's cost

A village healer discovers her gift works by drawing life from whoever is standing nearest, and she has been practising for eleven years. Write the moment she sees the pattern in who has died young.

18. The forged prophecy

The hero's prophecy was written by the villain, decades in advance, precisely to produce a hero who would arrive too late. The hero has just found the draft. Write him deciding whether to follow it anyway.

19. The weary immortal

An immortal of four thousand years is looking for someone worthy of killing him, and his standards are the problem. He has finally found a candidate who does not want the job. Write the offer.

20. The mirror of futures

A mirror shows not reflections but futures, and one family has used it to arrange every marriage, war and inheritance for two centuries. The current heir looks into it and sees nothing at all. Write her response.

Dark does not mean grim throughout. The tired monster and the weary immortal work precisely because they are almost funny, which is what lets the ending land.

One rule governs both: everything ordinary stays ordinary. Exactly one thing is strange, and the characters treat it as a logistical problem rather than a miracle.

21. The latte summoner

A barista discovers her latte art summons a minor spirit with every cup, and each one lingers for exactly as long as the foam holds. The morning rush is ninety customers. Write the shift.

22. The vampire's talk show

A vampire hosts a late-night talk show about supernatural politics, and the ratings depend entirely on nobody in the audience believing any of it. Tonight's guest intends to prove it. Write the broadcast.

23. Code in an older language

A contract developer finds a working function in a legacy codebase written in a language that predates writing. It compiles. Deleting it breaks something that is not in the repository. Write her investigation.

24. The ley line map

A transport planner realises the subway map she inherited was drawn to follow ley lines rather than population, and the line now under construction will sever one. She has no way of explaining this to the board. Write the presentation.

25. The dating app ghost

A ghost has been quietly matching soulmates through a dating app for six years, and the company has just deployed an algorithm that overrules her. Write her first act of sabotage.

26. The magician who cannot explain

A working stage magician's tricks have begun actually happening, and his entire act depends on the audience knowing they are tricks. Tonight he saws someone in half. Write the performance.

27. The glowing graffiti

Graffiti in one neighbourhood has begun glowing whenever violence is near, which the artist never intended. The police have started using it. Write his decision about the next wall.

28. The colour of feeling

In one town, emotions have become visible as colour on the skin, and nobody can conceal anything any more. The town's only therapist can also see her own reflection. Write her first session after the change.

29. The rain that finds liars

It rains only on people who have lied, and the town has adjusted: an umbrella is an admission, dry clothes are a boast. A woman who has never lied is caught in a downpour. Write the following hour.

30. The missing shadow

A woman wakes to find her shadow gone. Nobody else notices, which is worse than if they had. Write the day she spends working out what it means.

A useful tone test: if your characters are amazed, you are writing urban fantasy. If they are mildly inconvenienced, you are writing magical realism. Pick one and hold it.

Romance in a magical setting lives on the obstacle the magic creates. In each of these the feeling is already established, and the magic is what makes acting on it costly.

31. The witch and the cursed prince

A witch curses a prince for a good reason, then takes work in his household to observe the effects, and falls in love with the man the curse is slowly making him. Lifting it would restore the man she despised. Write her hesitation.

32. Never the same age

Two immortals meet once a century, but they age at different rates and are never the same age twice. At this meeting one is nineteen and the other is seventy. Write the meeting.

33. The angel and the demon

A guardian angel and the demon assigned to the same human have been quietly cooperating for forty years and have run out of ways to call it professional. The human dies next week. Write the last week.

34. The bargained heart

A fae strikes a bargain for a human's heart and receives, precisely and literally, the organ. He survives, but no longer feels anything at all, and she now has to live with what she asked for. Write her attempt to give it back.

35. The dragon's courtship

A dragon takes human form to court a scholar, but the form holds only while she is telling the truth, and courtship requires a great deal of flattery. Write the first dinner.

36. The split soul

Two strangers discover they share one soul divided between them, so every emotion arrives in both at once and neither can tell which of them it started in. Write them trying to establish who is actually in love.

37. Midnight meetings

The villain's second-in-command and the hero's sister have met at midnight every week for a year, and neither has ever mentioned the war. Tonight one of them has to. Write the meeting.

38. The truth ring

A ring binds two strangers together until each has told the other one complete truth. They have been bound for eight months. Write the evening one of them nearly manages it.

39. The warrior and the ghost

A warrior and a ghost share memories through dreams, and the ghost is slowly forgetting which memories are hers. The warrior has started filling the gaps. Write the night she realises she is inventing them.

40. The sea's affection

The sea has fallen in love with one sailor and expresses it by calming for him alone, which has made him the most suspected man in the fleet. Write the voyage on which the crew decides what to do about it.

Decide early whether the magic can be undone. If it can, the story is about the choice. If it cannot, the story is about the adjustment. Those are two different stories and mixing them weakens both.

Retellings need a reason to exist beyond the retelling, and worldbuilding needs somebody standing in the world with a problem. Each of these supplies both.

41. Medusa's account

Medusa agrees to a long interview on one condition: the journalist must never look up from her notes. Write the third day, when the journalist starts to.

42. The gods' press conference

The old gods return and hold a press conference. It becomes clear within minutes that they have prepared statements and no concept of what a question is. Write the Q and A.

43. Persephone stays

Persephone declines to return to the underworld and the seasons simply stop, which turns out to be a negotiating position rather than a catastrophe. Write the letters between the two of them.

44. The phoenix refuses

The phoenix has decided not to rise again, and the priesthood built around its cycle has ninety days before anyone outside notices. Write their attempt to persuade a bird.

45. Cupid's resignation

Cupid has grown tired of love and begun deliberately mismatching people, with results that are not obviously worse than before. Write the audit.

46. The mined magic

Magic is extracted from the ground like ore, and the last productive seam has roughly three years left. The mine surveyor knows the real figure; her employer has published a different one. Write her decision.

47. The dying tree city

A city built inside a living tree has begun dying from the inside, and the arborists who could diagnose it were exiled two generations ago for predicting exactly this. Write the delegation sent to find them.

48. The remembering ocean

The ocean is sentient and remembers every shipwreck in detail. It has begun returning specific objects to the specific descendants of the drowned. Write the arrival of a package nobody sent.

49. Magic as contagion

Magic spreads like an illness: contact, incubation, symptoms. A quarantine physician who has spent her career containing it notices the first symptom in herself. Write the hour after she notices.

50. The library between

A library exists between realities and lends books that were never written in the borrower's world. The librarian has one rule, that nothing may be returned late, and somebody is four days overdue. Write the collection.

For a retelling, pick the moment the original skipped. Everyone already knows the myth, so the gap is where your version actually lives.

• Write the named scene first, badly. No outline, no planning. You are looking for the voice, not the plot.
• State the magic's rule in one sentence. If you cannot, the reader will not be able to follow the consequences and the ending will feel arbitrary.
• Cost both options. Work out what the character loses by acting and what they lose by refusing. If those match, the prompt needs a harder constraint.
• Cut the opening paragraph. Fantasy openings are the worst offenders for throat-clearing, because the urge to establish the world is strongest right at the start.
• Expand one scene at a time. An AI paragraph generator widens a scene you have already chosen but will not tell you which scene matters. Revise in separate passes too: rhythm with an AI sentence rewriter, mechanics on their own.
• Name things last. Use placeholders until the draft is done. Naming a character Aelithuwen in paragraph one is how a writing session becomes an afternoon of inventing an alphabet.

Models differ most on prose, which matters in fantasy because the register is doing so much of the work. Claude Sonnet 5 tends to hold a consistent voice and resist drifting purple across a long passage, while Gemini 2.5 Pro is stronger on dense sensory description. Running the same opening through both and comparing is faster than arguing with one of them.

The more useful move is to interrogate a prompt rather than ask for a draft of it. Paste one of the blockquotes above and ask what the magic costs, who benefits from the current arrangement, and what the most predictable version of this story would look like. That last answer is the valuable one, because it tells you what to avoid. The other AI writing tools are for the drafting and revision passes afterwards.