Craft Guide — Planetary Romance
Barsoom, Brackett's Mars, the Dying Earth: planetary romance is built on alien atmosphere, sensory strangeness, and the romance of worlds older than memory. Here is how to build one.
Start Writing FreeAtmosphere before explanation
The planetary romance world must hit the reader through the senses before it explains itself
Decline amplifies beauty
The dying world's atmosphere is most powerful when the finality is inseparable from the grandeur
Consistency over accuracy
Internal consistency in your alien physics matters more than scientific accuracy
The planetary romance world should hit the reader through the senses before it hits them through the intellect. Colour, smell, texture, the quality of light under a different sun, the feel of alien gravity: these sensory registers create presence before the reader knows anything about history or culture or politics. Brackett's Mars is a place the reader can feel: dry, ancient, rust-coloured, with thin cold air and a sense of vast time. The reader's relationship to the world is primarily emotional and bodily, and the world-building must serve that relationship first.
The dying world is planetary romance's richest emotional register: the sense of something magnificent that is ending, of a civilisation that has lasted so long that its own people have forgotten what it was. This atmosphere is created through specific detail that implies what is not said: the archive that has not been opened in a thousand years, the ritual whose purpose has been forgotten but whose form persists, the city that was built for a population ten times the current one. Vance understood that the beauty of the Dying Earth is inseparable from its finality. The world is most beautiful precisely because it is ending.
The hero who arrives on an alien world from outside is structurally identical to the outsider hero of countless other genres, but in planetary romance the displacement is literal and cosmic. This outsider position provides the reader-identification function: we see the world fresh because the hero is seeing it fresh. The craft danger is making the hero's outsider perspective feel like a natural advantage over the people who have lived on the planet for generations. The contemporary planetary romance is more interesting when the hero's displacement is a vulnerability, not a superpower.
You do not have to be scientifically accurate, but you do have to be internally consistent. The physical parameters of the world generate its biological and cultural consequences, and those consequences should be traceable back to the parameters. If the world has two suns, what does that do to the day/night cycle, and what does that do to the culture's relationship to darkness and sleep? If the gravity is different, how do the bodies of native creatures differ? This chain of consequence is what separates a world with alien atmosphere from a world with an alien sticker on it.
The cultures the hero encounters on an alien world should have histories, internal conflicts, aesthetic traditions, and relationships to their own past that predate the hero's arrival and will outlast it. This is both an ethical and a craft requirement: a culture that exists only to react to the protagonist is not a culture; it is a backdrop. The most interesting planetary romance gives the indigenous inhabitants problems the hero cannot solve, knowledge the hero cannot access, and a perspective on the hero's arrival that is not simply grateful or hostile but genuinely complex.
The planetary romance runs on adventure pacing: chapter endings that leave the protagonist in jeopardy or at the threshold of a new revelation, movement between locations that each have their own character and threat level, and a momentum that is primarily physical. The reader should feel the pace of a journey through an alien landscape: the distances, the hazards, the strange encounters, the moments of respite. This pacing is different from literary pacing and requires the writer to suppress the impulse to pause and analyse. The reflection happens in camp; the action happens on the road.
iWrity gives ambitious genre writers the tools to plan, draft, and publish worlds that feel genuinely other. Start building yours.
Start FreeAlien worlds feel like Earth in costume when they differ from Earth only in surface detail: the sky is a different colour, the humans are taller, the horses have six legs. Genuine alterity requires thinking through the physical parameters of the world (gravity, radiation, atmospheric composition, length of day and year) and then following those parameters to their consequences in biology, culture, and psychology. If the gravity is lower, how does architecture change? How does combat change? How do characters' bodies feel different to them? Brackett's Mars feels genuinely alien because she has thought through what a dying, ancient, arid world would do to the cultures that evolved on it. The world-building is in the consequences, not the inventory.
The atmosphere of antiquity and decline is built through accumulated detail that implies vast spans of time behind the present moment: ruins whose purpose is no longer known, technologies that work but whose principles have been forgotten, cultures that remember, dimly, that they were once greater. Vance does this with extraordinary elegance in the Dying Earth stories, where the casual detail of the world implies a history so long and so layered that it makes the human present feel trivial and precious simultaneously. The key is restraint: you gesture at the depth rather than explaining it, because explanation destroys mystery and mystery is what creates the sense of a world larger than the story.
The displacement of the planetary romance hero is structural: they come from outside the world they inhabit, which gives them (and the reader) the perspective of a newcomer who sees things the natives take for granted. The danger is that this structure makes the hero the centre of a world that was doing fine without them, which is both epistemically arrogant and, in the colonial context, freighted with troubling implications. The contemporary writer can use the displacement structure while reversing its usual hierarchy: the hero is genuinely transformed by the world rather than transforming it, and the things they learn are not available anywhere else, because they could not have been. The planet makes the character; the character does not complete the planet.
The classic planetary romance often reprises colonial narratives: the outsider hero who arrives among “primitive” natives, surpasses them by virtue of superior (usually Western) qualities, and either leads or saves them. This pattern is not accidental; it reflects the colonial context of its production. Contemporary writers who love the genre's aesthetics and energy can engage with this legacy rather than ignoring it, by writing indigenous planetary cultures with genuine interiority and civilisational complexity, by questioning the premise that the outsider hero's arrival is beneficial, and by letting the world's inhabitants have their own agendas that precede and will outlast the protagonist. The bones of the genre are good; it is the politics that need updating.
Planetary romance prioritises atmosphere, beauty, and adventure over hard science, which distinguishes it from both hard SF and from space opera. The pleasures of the genre are primarily aesthetic and emotional: the strangeness of the world, the romance of vast distance and alien sky, the compressed intensity of sword-and-planet adventure. This is a legitimate aesthetic project, but it requires the writer to be conscious of what they are optimising for. You are not trying to be scientifically accurate; you are trying to create the feeling of being somewhere genuinely other, somewhere that has its own laws and its own beauty, somewhere that makes Earth feel small. The science serves the atmosphere rather than the atmosphere serving the science.
