Idea generator

18 Fantasy Writing Prompts Prompts

These prompts create a starting constraint, question, or situation. Use one as written, combine two, or change the audience, setting, objective, or limitation to make a new exercise.

Choose a random prompt from the bank.
Prompt 1

In a city where shadows can testify in court, one witness arrives without a shadow.

Prompt 2

A river grants one truthful answer but permanently changes course after every question.

Prompt 3

Apprentice mages discover their exams are actually treaties with forgotten beings.

Prompt 4

A mountain opens a new pass only for travelers carrying something they stole.

Prompt 5

A ruler cannot lie, so the entire government is built around strategic silence.

Prompt 6

Every spell creates a small physical object that must be stored somewhere; the oldest city is drowning in magical debris.

Prompt 7

A family inherits a house whose rooms rearrange according to unresolved arguments.

Prompt 8

A courier delivers messages between the living and dead but is forbidden to read replies.

Prompt 9

A sword chooses the person who should not wield it.

Prompt 10

A village festival reenacts a myth until one year the mythical antagonist attends.

Prompt 11

Magic can repair anything except an object broken intentionally.

Prompt 12

A kingdom measures age by memories rather than years, creating a market for stolen childhoods.

Prompt 13

A school teaches students to summon doors, but one door opens to a classroom that no teacher recognizes.

Prompt 14

A healer discovers the kingdom’s sacred cure works by moving illness into a hidden population.

Prompt 15

A mapmaker notices a forest is expanding only on maps, then finds roads disappearing in reality.

Prompt 16

A dragon offers to protect a city if citizens stop telling stories about dragons.

Prompt 17

A god answers prayers in alphabetical order, so language reform becomes a political movement.

Prompt 18

A rebellion’s secret weapon is a magic system everyone considers too boring to study.