Space Opera Writing Prompts

Dynasties, fleets and whole worlds at stake, three premises at a time.

Show all 100
  1. The lost home world of two rival peoples is found, and it is far too small for either story.Both want: to be its heirs. Turn: the one town left there has room for a single delegation.
  2. Two star nations have fought over a nebula longer than either can recall, and an archivist finds the first dispatch.Both want: the nebula. Turn: the first shot was a salute.
  3. A blockade cuts one moon off from all news, and a girl with a home-built radio becomes its only voice.Both want: what the moon knows. Turn: she reports the weather, and both fleets start planning by it.

All 100 prompts

Empires and thrones 25

  • A child emperor of nine hundred worlds and the regent who rules in his name are invited to the same treaty table. Both want: to sign for the empire. Turn: the other side will take only the signature of whoever can name its sun.
  • A coronation needs the consent of an allied court that sleeps for sixty years at a time, and it has just gone to bed. Both want: a crowned ruler before the fleets lose patience. Turn: someone must go in and knock.
  • A crown is kept in three pieces by three sector capitals, and one of the three wants to leave the empire. Both want: the third piece. Turn: the leaving sector offers to rent its piece back by the coronation.
  • A dowager queen and the admiralty each claim the right to choose the crown prince's tutor. Both want: the mind of the next ruler. Turn: the prince hires his own, a mapmaker from the docks.
  • A governor at the rim has ruled so long without orders that her province mints its own coins, and an inspector lands. Both want: the province's loyalty. Turn: the inspector's own coins went out of use forty years ago.
  • A merchant league buys up an empire's debts and arrives at the palace to collect the throne room. Both want: the shipyards of the throne world. Turn: the emperor offers the league his job, paperwork included.
  • A new empress inherits a promise, made by her grandmother to a nomad fleet, of one planet to be named later. Both want: the best world she has. Turn: the nomads ask for the smallest moon, and she must find out why.
  • A princess sent as a hostage to a rival court at six is now its best diplomat, and her birth empire wants her back. Both want: her at their table. Turn: she negotiates her own return, for both sides, in the same room.
  • A republic of asteroid miners votes to join an old star kingdom, and the kingdom votes not to have them. Both want: the miners' ice. Turn: the miners apply again as a kingdom, with a queen elected for the afternoon.
  • A retired emperor wakes from a long cold-sleep voyage to find his great-granddaughter on the throne he never gave up. Both want: the crown. Turn: she offers him his old room and the post of heir.
  • A senate of two hundred worlds and its own war fleet each claim to speak for the union while the capital is cut off. Both want: the union's name on their orders. Turn: the capital comes back on the line and asks who is in charge.
  • A star kingdom picks its monarch by a lottery of every citizen, and the draw names someone living on an enemy world. Both want: her. Turn: she accepts the crown and keeps her old job at the enemy's customs office.
  • A usurper takes the palace and learns that a guild of archivists decides what counts as law. Both want: the wording of the next law. Turn: the guild files his coup under amendments, pending.
  • A viceroy receives an order from the throne to arrest herself. Both want: the colony's grain, throne and colonists alike. Turn: she does it, and governs from the cell.
  • An ambassador from a hive of a billion minds presents its papers to a one-ruler empire and asks where the rest of him is. Both want: a border through the nebula. Turn: the hive sends one mind to try solitude, and it will not go home.
  • An empire's oldest noble house and its newest are ordered to share a single seat in the senate. Both want: the seat's one vote. Turn: they agree on nothing except that the order itself was an insult.
  • An empress steps down without naming an heir, and her two capitals, forty light-years apart, each crown one. Both want: the old seal, in transit on a slow ship. Turn: the courier who carries it is asked to choose.
  • An exiled royal house runs a traveling opera company, and it is booked to play the palace that exiled it. Both want: the old anthem. Turn: it is in the third act, and the audience stands.
  • An heir raised in hiding on a freighter comes home to the palace speaking the dialect of the docks. Both want: the heir's first speech, court and dock unions alike. Turn: she gives it twice, once in each tongue.
  • An imperial tax fleet and a free port's harbor master keep ledgers of the same cargo, and the totals differ by one planet. Both want: the planet's revenue. Turn: the planet has been paying a third party all along.
  • The crown of a star kingdom belongs to whoever holds the home world, and the home world's sun is failing. Both want: to say where the capital goes. Turn: the engineers' guild offers to move the planet, crown and all.
  • The smallest duchy in an empire sits on the only jump point to the capital, and the toll is whatever the duchess says. Both want: the gate, empire and trade league alike. Turn: she does not want money. She wants a vote.
  • Two dynasties share one throne by ruling in alternate centuries, and the handover is next week. Both want: one more century. Turn: the two houses' calendars disagree by a day about when this one ends.
  • Two emperors agree to settle a border by a race between their slowest ships, and the race will take ninety years. Both want: one garden world. Turn: the crews, born aboard, are told at the finish line what the race was for.
  • Two rival empires discover that their founding charters are copies of one document. Both want: to be the original. Turn: the original is found in a museum on a third power's moon.

Crews and ships 25

  • A captain inherits her mother's ship along with her mother's debts to a pirate queen and a customs service. Both want: the ship's hidden hold. Turn: the hold is full of her mother's letters, to both.
  • A cargo crew carrying a throne to a coronation is offered double by a rival claimant to arrive a day late. Both want: the chair. Turn: the crew arrives on time, at the wrong palace.
  • A courier crew has carried mail between two enemy capitals for twenty years, and its safe-conduct lapses mid-voyage. Both want: the mailbags. Turn: the crew starts reading the letters aloud on an open channel.
  • A crew of six from six rival worlds is put together so that no one power can claim what the ship finds. Both want: the first report, each of the six. Turn: the crew writes one report and signs it as a seventh world.
  • A freighter's six-legged cat is declared a national emblem by one empire and a protected species by another. Both want: the cat. Turn: the cat has kittens, and the question becomes arithmetic.
  • A hospital ship that tends both fleets is ordered by each to stop tending the other. Both want: its wards. Turn: the ship paints out its name and answers hails from neither.
  • A lighthouse crew guides ships of every flag past a black hole, and two empires each offer to buy the light. Both want: the light for their own ships only. Turn: the keeper dims it for both until they share.
  • A liner carrying two feuding courts to a peace summit loses its engines halfway there. Both want: the last working shuttle. Turn: the steward chairs the summit in the dining room, between courses.
  • A living ship raised from an egg by its crew is claimed by the world whose yards hatched it. Both want: the ship. Turn: somebody thinks to ask the ship.
  • A long-haul crew comes back from a thirty-year run to find its home port under another flag and its cargo banned by both. Both want: the cargo impounded. Turn: the cargo is seeds, and it is nearly planting season.
  • A mapmaking crew sells the same chart to two empires, and the chart shows a planet that is not there. Both want: the planet. Turn: the crew sets out to find one that fits the drawing.
  • A navigator finds a shortcut that makes her freighter faster than any warship, and two navies want the chart. Both want: the chart. Turn: there is no chart. The shortcut is in how she flies.
  • A news ship broadcasts to both sides of a closed border, and each side demands that it stop telling the other the truth. Both want: the transmitter. Turn: the crew starts reading both sets of complaints on the air.
  • A pilot is the only person to have flown the passage through a nebula, and two fleets send recruiters to her noodle stall. Both want: the route. Turn: she takes both on as kitchen hands and says she will teach whoever lasts.
  • A pilot school's graduating class is to be split by lot between two navies, and the class borrows the training ship first. Both want: their cadets back. Turn: the class returns on time, with a pact that the navies were not shown.
  • A pirate crew takes a ship and finds aboard it the treaty that would end the war the pirates live on. Both want: the treaty delivered. Turn: the crew votes, and the cabin boy has the deciding hand.
  • A racing yacht wins the great regatta between the stars, and the trophy turns out to be the deed to a disputed planet. Both want: the trophy back. Turn: the crew sails there to see what it has won.
  • A salvage crew tows home a derelict flagship, and two navies each send a polite note claiming it. Both want: the ship's logs. Turn: the ship's computer wakes up and files a claim of its own.
  • A ship's engineer wins a moon at cards from a baron's nephew, and a mining combine holds a lease on it. Both want: what is under the moon. Turn: the deed is real, and it makes her a baroness.
  • A smuggler crew is hired by both sides of a blockade to carry the same sealed box in opposite directions. Both want: the box delivered unopened. Turn: the crew builds a second box.
  • A stowaway in the cargo bay is a runaway diplomat from one power with the other's apology in her pocket. Both want: the apology, one to publish it and one to burn it. Turn: she has already memorized it.
  • A survey crew names a new star lane after its captain, and two empires arrive to name it after themselves. Both want: the lane. Turn: the lane opens only for the survey ship's old engine.
  • A tug crew owns the only boat that can move a crippled dreadnought, and names its price in front of two admirals. Both want: the dreadnought. Turn: the price is the dreadnought's galley, cooks included.
  • An old captain is taking her ship to the breakers, and a museum world and a rebel fleet both meet her at the gate. Both want: the ship. Turn: she asks each what they would have her crew do tomorrow.
  • Retired navy cooks buy their old warship at auction to open a restaurant, and two treaties still count its hull. Both want: the hull on their side of the count. Turn: the cooks ask to be counted as a kitchen.

A war across systems 25

  • A blockade cuts one moon off from all news, and a girl with a home-built radio becomes its only voice. Both want: what the moon knows. Turn: she reports the weather, and both fleets start planning by it.
  • A frontier world changes hands eleven times in one war, and its mayor keeps both flags in the same drawer. Both want: the world's fuel wells. Turn: the twelfth fleet is asked to wait in orbit while the town votes.
  • A generation born on a fortress station has known nothing but the siege, and the siege is lifted. Both want: the station, besiegers and home fleet alike. Turn: the station declares for itself.
  • A message drone offers peace in a language neither fleet speaks, sent by a third power that nobody has met. Both want: to answer first. Turn: the only person who can read it is a schoolteacher on a contested moon.
  • A peace conference has to be held on a ship that never stops moving, because no world will agree to host it. Both want: the ship to end its voyage in their space. Turn: the captain flies in circles until they sign.
  • A prisoner exchange stalls when the prisoners on each side ask to stay where they are. Both want: their people home. Turn: the two camps have started a school together.
  • A spy sent to learn the enemy's war plan finds that the enemy has none and is waiting to learn hers. Both want: to go second. Turn: she reports a plan she made up, and both sides prepare for it.
  • A treaty has each side scrap one warship for every one the other scraps, and the last two ships are the flagships. Both want: the other to go first. Turn: the two crews do it together, bolt for bolt.
  • A war correspondent's dispatches are the only account both sides trust, and each side offers her a medal to change one word. Both want: the word. Turn: she prints both offers, medals and all.
  • A war ends, and the two fleets must sail home together through a passage that neither can navigate alone. Both want: to be led, not to lead. Turn: the old enemies trade navigators for the trip.
  • A war is declared by a message that takes nine years to cross, and the answer is already on its way back. Both want: a belt of comets. Turn: the two messages pass each other, and each is an apology.
  • A war is fought over a planet that both sides' maps place on their side, because the maps were drawn from opposite ends. Both want: the planet. Turn: the planet's own map shows neither empire at all.
  • A war of succession splits a navy down the middle, and sister ships built in one yard end up on opposite sides. Both want: the yard that can repair them. Turn: the yard will work only on both ships at once.
  • An armistice line is drawn through the middle of an inhabited station, and the bakery stands on both sides of it. Both want: the station's docks. Turn: the bread goes through the line each morning, and then so do the bakers.
  • An empire and the rebellion against it have fought so long that one mill town weaves both uniforms. Both want: the town's looms. Turn: the weavers send out one season's cloth in the same color.
  • Both sides of a long war depend on the same guild of pilots, and the guild goes on strike. Both want: the pilots flying again. Turn: the guild's one demand is that the two sides meet to hear it.
  • By old custom a ceasefire holds for as long as a certain comet can be seen, and astronomers are asked to keep seeing it. Both want: the quiet to last. Turn: the two observatories swap staff to keep each other honest.
  • The front of a war is a river of drifting asteroids, and this year it drifts across a family's farm. Both want: the farm's water. Turn: the family posts visiting hours for each fleet, on alternate days.
  • The most decorated squadron of a war and its most wanted raiders turn out to buy their ships from two sisters. Both want: the sisters' next hull. Turn: the sisters have not spoken in years, and this may do it.
  • Thirty small worlds in a coalition must choose one fleet commander, and each proposes another world's candidate. Both want: victory without risking their best officer. Turn: the one nobody proposed is the only one willing.
  • Two alliances agree to fight only in one empty system, to spare their worlds, and a colony ship arrives there by mistake. Both want: the empty system's gate. Turn: the colonists send both fleets a bill for rent.
  • Two empires fight over a star that an observatory says will go out within ten years. Both want: the star's forges. Turn: the observatory belongs to a third party that is selling tickets.
  • Two star clusters fight with fleets that take forty years to arrive, so every battle is planned by grandparents. Both want: the star midway. Turn: the fleets, grown old in transit, make a peace nobody at home ordered.
  • Two star nations have fought over a nebula longer than either can recall, and an archivist finds the first dispatch. Both want: the nebula. Turn: the first shot was a salute.
  • Two war councils plan surprise attacks on each other's capitals for the same hour, and both capitals stand empty. Both want: the other's capital. Turn: each fleet arrives at an open city, with no orders for what comes next.

A lost world found 25

  • A garden world long thought a legend is found, with a beacon repeating in an old script: please wipe your feet. Both want: landing rights. Turn: somebody still keeps the garden, and means it.
  • A library planet is found whose catalog lists books not yet written, by authors of two warring powers. Both want: one shelf, where the catalog lists a peace treaty. Turn: the entry names two authors.
  • A lost ark ship is found still under way, and its passengers do not believe that they have arrived. Both want: the world it was sent to, ark and empire. Turn: the empire's settlers there came on the ark's sister.
  • A lost colony turns out to have been founded by deserters from both sides of an ancient war. Both want: to be first to pardon them. Turn: the colony replies that it pardoned both sides long ago.
  • A lost world is found by a child's toy telescope a week before the navies' great arrays see it. Both want: the claim. Turn: by the finder's law it is hers. She is eight, and names her grandmother regent.
  • A lost world is found to be the wild home of the one crop both empires live on. Both want: the wild seed. Turn: it will grow only beside a weed that both empires cleared away long ago.
  • A moon listed as lost in a famous battle is found whole, and the fleet that fell there is farming it. Both want: the farmers' silence, since two navies made heroes of them. Turn: the farmers want their names back.
  • A planet is found whose people gave up star travel on purpose and locked the reason in a vault. Both want: the reason. Turn: the vault opens from outside, and the people ask that it stay shut.
  • A planet missing from every chart turns up exactly where an old nursery rhyme says, and two academies race to land first. Both want: the first landing. Turn: the rhyme has a second verse about how to leave.
  • A ring of worlds built around a star is found empty and tidy, with the keys left in a bowl by the door. Both want: the keys. Turn: a note says who they were left for, and it is neither of them.
  • A rogue planet drifting with no sun is found with its windows lit. Both want: whatever keeps it warm. Turn: the lights are one caretaker with a long list of lamps.
  • A survey ship finds a colony, lost for six hundred years, that still pays its taxes into a sealed chest for a fallen empire. Both want: the colony's allegiance, two successor states. Turn: the colony sends an auditor to inspect them.
  • A whole people is found asleep in vaults under a dead-looking world, with a note: wake us when it is over. Both want: to decide whether it is over. Turn: nobody knows what it was.
  • A world found beyond the rim speaks the parent language of both empires' tongues and has no word for either empire. Both want: to be called the elder child. Turn: its word for visitor is the same as its word for late.
  • A world found in the gap between two empires has been trading quietly with both for centuries, under two names. Both want: their old trading partner. Turn: it asks which name they would like on the bill.
  • A world hidden in a dust cloud has watched the galaxy for millennia and kept a file on every empire. Both want: the files. Turn: the world asks its visitors to correct its file on itself.
  • A world on the far side of a wormhole keeps one seat in its parliament for the visitors, when they come. Both want: the seat. Turn: the seat comes with a thousand years of unread minutes.
  • An explorer reaches a world that every expedition before her has found and none has reported. Both want: her report, guild and crown. Turn: on the second day she understands why nobody wrote one.
  • An old probe comes home after ten thousand years with a set of coordinates and one line: come and see. Both want: to get there first. Turn: the probe was not ours. Ours is still out there.
  • The first starship ever lost is found in orbit, and its crew's descendants on the world below think the galaxy is a myth. Both want: the wreck. Turn: the people below ask for proof that the visitors are real.
  • The hidden shipyard of a vanished fleet is found full of unfinished ships, with one very old foreman still at work. Both want: the hulls. Turn: he will hand them over when they are finished, and he is particular.
  • The lost home world of two rival peoples is found, and it is far too small for either story. Both want: to be its heirs. Turn: the one town left there has room for a single delegation.
  • The lost treasure world of an old pirate kingdom is found, and it is a school. Both want: the hoard. Turn: the hoard was spent on the school, and term has started.
  • The map to a lost world is found woven into the hem of a folk costume worn in two empires. Both want: the weavers who still know the pattern. Turn: each empire has half of the hem.
  • On a drowned planet one tower still stands, and a line of keepers has signaled from it for a thousand years. Both want: to answer the signal. Turn: the signal was never a call for help. It is a warning to stay off the rocks.

How it works

Each of these 100 space opera writing prompts sets two powers after one prize: a throne, a ship, a star, a world that was on nobody's chart. The line under it names the prize and gives a turn.

Read the full guide

A space opera plot generator in four parts

Empires and thrones is court intrigue: an empress steps down, and her two capitals each crown an heir. Crews and ships puts a handful of people on one hull between two navies. A war across systems keeps to the shape of the war and leaves out the shooting. A lost world found begins with a discovery that two powers reach on the same day.

Start from what both sides want

A space opera runs on a prize that cannot be split: one seal, one gate, one garden world. Write each power's best reason for deserving it, then hand the story to someone small who stands between them, such as a courier, a cook or a harbor master.

  • Make travel slow somewhere. A declaration of war that takes nine years to arrive is a plot by itself.
  • Let both powers be right about the prize. The reader should be unsure whom to back until the turn.

Questions and answers

What is a space opera?

Science fiction on the grand scale: adventure among the stars, where ships cross between them faster than light and the background is usually empires, alien peoples and wars in space. The opera is not music: it is the opera of soap opera, meaning melodrama.

Do the prompts borrow from any series?

No. No ship, empire, planet or character of a published book, film, show or game is named or retold. The hive of a billion minds, the duchess with the toll gate and the freighter's six-legged cat belong to this list.

How do I turn one prompt into a whole plot?

Take the turn as the end of act one, not the end of the story. If the derelict's computer files a claim of its own or the lost colony sends an auditor, ask what each power does the morning after it finds out.