THE BOOKS WE WRITE · FICTION AND IMAGINED WORLDS
Writing Fantasy: Build a World That Makes Somebody's Life Difficult
Fantasy introduces elements beyond ordinary reality and asks the reader to inhabit their consequences. A convincing world is more than a catalogue of invented places. Its rules, histories, and inequalities should affect what the characters can do.
By Dr. Robert Urban · 6 minute read
Writer’s Notes / The Books We Write
Follow one impossible thing into ordinary consequences · Establish limits before asking magic to resolve conflict · Let exposition arrive through need · Subgenres create different centers of gravity · Treat cultures as lived systems · A series needs a satisfying first book · Revise the world through its effects
A map can be beautiful. A glossary can be impressive. Neither has ever wanted anything badly enough to carry a novel.
Begin with a person under pressure inside the world. If magic repairs wounds, who can afford it? If the dead can speak, who is permitted to question them? If a city floats, who maintains the machinery or enchantment, and what happens to those living beneath it? The invention becomes interesting when it changes a life.
Follow one impossible thing into ordinary consequences
Choose a central departure from reality and trace its effects through work, family, law, belief, trade, and power. You do not need to explain every consequence in the manuscript. Thinking through them makes the visible world less arbitrary.
In an invented setting, people can store a memory in glass. That raises practical questions: can memories be stolen, copied, altered, or sold? A market may arise. So may a profession, a crime, a ritual, and a family disagreement about which memories should survive.
The story might follow a glass repairer asked to restore a memory that contradicts an official history. Now the worldbuilding creates both the person’s expertise and the problem. It is doing narrative work rather than waiting in an appendix.
Establish limits before asking magic to resolve conflict
A magic system can be explicit and rule-bound or mysterious and numinous. The reader does not need a technical manual for every wonder. But a decisive solution should feel consistent with the world the book has taught them to inhabit.
Limits may involve cost, access, knowledge, time, material, danger, or moral consequence. A spell that can do anything at no meaningful cost makes many problems temporary scheduling errors.
If magic remains mysterious, it may be better suited to creating complications, awe, or uncertainty than to conveniently solving every plot problem. The issue is reader trust. A new power introduced at the climax can feel like an author granting an exception to their own story.
Keep a private rule ledger. Record what is possible, what people believe is possible, and what is genuinely unknown. Those categories can differ, but the difference should be intentional.
Let exposition arrive through need
A character buying bread may reveal more about a city than a page listing its dynasties. What currency is accepted? Who is refused service? What does the seller fear? Which ordinary object is difficult to obtain?
Select details relevant to the viewpoint character’s immediate concern. A local resident does not mentally explain the entire transit system every time they board a vehicle. A visitor may need more orientation, but should still have a reason to notice particular things.
Use unfamiliar terms sparingly at first. Give the reader an anchor before asking them to remember five invented titles. You can expand the vocabulary as the world becomes familiar.
History belongs where it changes a present decision. An old treaty becomes interesting when someone is about to violate it, misunderstand it, or discover what it omitted.
Subgenres create different centers of gravity
Epic fantasy often connects individual decisions to large political, historical, or existential stakes. Scale requires selection. More kingdoms do not automatically create more significance.
Low fantasy commonly brings the fantastic into a world closer to ordinary reality or keeps the supernatural more limited. The contrast between familiar life and the impossible can carry much of its force; terminology varies, so describe the actual reading experience clearly.
Urban fantasy lets the supernatural interact with a contemporary city. Institutions, infrastructure, neighborhoods, and daily work should matter alongside hidden powers. A city is more than a backdrop with traffic.
Cozy fantasy often emphasizes community, belonging, recovery, or smaller-scale problems. Lower danger does not eliminate conflict. A threatened livelihood or fragile friendship can matter intensely when the book has made the people real.
Dark fantasy may combine wonder with horror, cruelty, or moral unease. Tone should emerge through consequence and perspective, not simply the number of unpleasant things added to the setting.
Romantasy gives a romantic relationship substantial importance within a fantasy story. Decide what the book promises about both the relationship and the larger conflict. The romance guide examines that reader contract.
Portal and quest fantasy use movement as a structure for discovery. Each place or trial should alter the traveler, the objective, or the reader’s understanding. A sequence of colorful stops can become a tour if nothing accumulates.
Treat cultures as lived systems
An invented culture needs internal differences: occupations, regions, generations, beliefs, ambitions, and disagreements. Assigning one trait to an entire people makes both the world and its inhabitants smaller.
When borrowing from real cultures, research beyond surface imagery. Understand the meaning and context of what you adapt, and seek informed readers where appropriate. An unfamiliar tradition should not function merely as a source of exotic menace.
Think about who benefits from the world’s rules and who must navigate them. A law that seems elegant from a palace may be absurd at a market stall. Those different experiences can create conflict without requiring every disagreement to become a battle between pure good and pure evil.
A series needs a satisfying first book
You may know what happens in volume seven. The reader is deciding whether volume one has earned Saturday afternoon.
Give the first book a substantial question it can resolve while leaving room for a larger story. A completed local objective can expose a wider problem. A victory can change the cost of the next undertaking.
Maintain continuity notes for names, distances, capacities, dates, relationships, and unresolved promises. The purpose is to protect creative freedom from accidental contradictions, not to make drafting feel like filing tax returns for an imaginary government.
Revise the world through its effects
Highlight passages of explanation and ask what each allows the reader to understand now. Move or cut details whose only justification is that you invented them and would like them appreciated.
Then trace the central speculative element through the plot. Does it change choices, costs, and outcomes? Could the story proceed almost unchanged if it were removed? If so, the invention may be ornamental.
Explore the neighboring questions in Writing Science Fiction and the emotional construction of people in Character Development. Return to The Books We Write for the full collection. A world feels large when its small details imply lives continuing beyond the page.