Spines > Book Genres > Romantasy
Book Genre Guide

Romantasy Books:
The Complete Genre Guide

This guide covers everything you need to know about romantasy: what the genre is, what makes it distinct, its most beloved tropes, the best romantasy books readers are recommending right now, and how to write one yourself. Whether you’re a reader who wants to know if romantasy is for you or a writer ready to build a world where magic and love carry equal weight, Spines is here to help you go further.

Typical length

70,000 to 100,000 words.

Pacing

Fast with escalating stakes.

Core Readers

Young adults.

Heart of It

Romance inside a fantasy world with genuine stakes and magic.

Best Formats

eBook & audiobook.

What Defines the Romantasy Genre

What Is Romantasy? Definition and Genre Explained

Romantasy is a genre that places a romantic relationship and a fantasy plot in parallel, giving both equal structural weight. The romance is not a subplot woven into a fantasy adventure. The fantasy world is not a backdrop for a love story. Both threads carry the full narrative load, and both have to resolve for the book to feel complete.

When Fantasy and Romance Share the Spotlight

Fantasy romance is a romance novel set in a fantasy world, where the genre conventions of romance govern the structure: the relationship is the primary plot, the HEA or HFN ending is the organizing principle, and the fantasy elements serve the emotional arc. Romantasy gives the fantasy plot genuine autonomy. The external conflict, whether a war, a chosen-one prophecy, or a court intrigue, is not simply a device to create proximity or obstacles for the couple. It is a story in its own right, running alongside the romance and intersecting with it at key points. Both endings matter.

Why Romantasy Is Booming

Romantasy has been the fastest-growing fiction category for several consecutive years. The reasons are structural: the genre delivers two of the most reliable drivers of reader engagement simultaneously. Romance readers who had been reading fantasy elements in their romance found a genre that gave those elements more room. Fantasy readers who had been ignoring or skimming the romantic subplots in their fantasy found a genre that treated those elements with the same seriousness as the magic system. Romantasy expanded the market by serving readers who had been underserved by both parent genres.

Give Readers the Best of Both Worlds

Romantasy readers come with two sets of expectations. From the romance side: the relationship will be the emotional center of the experience, and it will resolve in a way that honors the reader's investment. From the fantasy side: the world will be internally consistent, the magic will have consequences, and the external stakes will be real. Writers who understand both contracts and keep both of them build the kind of reader loyalty that turns a standalone into a series and a series into a community.

How to Write a Romantasy Book

Writing romantasy means building two complete arcs, one romantic and one fantastical, and making them inseparable from each other. Neither can be removed without collapsing the other. Here is how to make that work from the first page.

Design the romance arc and the fantasy arc to need each other.

The fundamental craft challenge of romantasy is making the two arcs structurally dependent. The fantasy plot should create conditions that the romance requires: proximity, shared stakes, revealed vulnerabilities, circumstances that force honesty. The romance should create consequences that the fantasy plot builds on: alliances forged through trust, decisions made because of the relationship, sacrifices that only make sense in the context of what the characters feel for each other. If the two arcs can run independently, the book is not romantasy.

Build a fantasy world with rules the romance has to navigate.

The magic system, the political structure, and the world's internal logic should create specific obstacles and possibilities for the romantic relationship. A world where magical bonds are literal and binding changes what it means for two characters to commit to each other. A court structure built on arranged alliances gives the romance a political dimension that raises its stakes beyond the personal. The fantasy world should be an active force in the relationship, not a setting it happens to be set inside.

Give both protagonists roles in the fantasy plot that exist independently of the romance.

Each protagonist needs a reason to be in the story that predates the relationship and would exist without it. A chosen one, a court spy, a resistance leader, a trained assassin: their role in the fantasy plot should be the foundation on which the romance is built, not something created to justify their presence together. Readers feel the difference between a protagonist whose identity exists independently and one who exists primarily to be loved.

Use the tropes deliberately and specifically.

Choose the tropes that fit the emotional arc you are building and commit to delivering them with specificity. An enemies-to-lovers arc needs genuine enmity with genuine roots, not surface-level antagonism that dissolves at the first kind gesture. A slow burn needs real obstacles to the resolution, not manufactured misunderstandings. The trope tells the reader what kind of emotional journey they are getting. The execution is what makes that journey feel earned.

Calibrate the pacing so both arcs escalate together.

The romantic tension and the fantasy stakes should build in parallel and tend to reach their peaks at similar moments. When the external conflict is at its most dangerous, the emotional stakes of the relationship should also be at their highest. When the characters get a moment of respite from the fantasy plot, it should be the moment the romantic connection deepens. The two arcs should feel like they are breathing together rather than taking turns.

Make the dark moment cost something in both arcs.

The dark moment near the end of a romantasy should register on both the romantic and the fantasy level. The relationship should appear to have failed at the same moment the external conflict seems unwinnable. This requires that the dark moment be built from character logic that has been developing throughout the book in both arcs simultaneously. A dark moment that only affects the romance, or only affects the fantasy plot, halves its impact.

Resolve both arcs in the ending, even if the series continues.

Each book in a romantasy series should provide some form of resolution in both arcs, even when larger questions are deferred to subsequent volumes. The romantic arc does not need to fully resolve if the series continues, but it needs to move to a new and stable stage. The fantasy arc does not need to close if there is more story to tell, but it needs to reach a meaningful stopping point. Endings that leave both arcs entirely open tend to produce reader frustration rather than anticipation.
Building a Romantasy plot and stuck on structure? A Spines writing coach can help you design your Romantasy, develop your investigator, and make sure every clue lands where it should.

Romantasy Subgenres

Romantasy is the broadest genre there is. Pick the lane closest to your story to see what readers expect and a benchmark title to study.
Subgenre

Enemies to Lovers

The most popular romance trope in the genre sits at the center of romantasy as well. Two characters whose relationship begins in opposition, whether ideological, political, or personal, are forced together by the fantasy plot and develop a connection through the specific friction of that opposition. The enemies-to-lovers arc works especially well in romantasy because the fantasy world provides natural reasons for enmity: opposing courts, rival factions, prophetic destinies that put two people on the same side of a war they thought they were fighting against each other.

Subgenre

Forced Proximity

Forced proximity places the two protagonists in a situation where physical closeness is unavoidable: a shared mission, a sealed location, a political arrangement neither of them chose. In romantasy, the fantasy world generates particularly high-stakes versions of this trope. A journey through hostile territory, a treaty that requires cohabitation, a training bond that cannot be broken. The external circumstances make avoidance impossible and the emotional reckoning inevitable.

Subgenre

Slow Burn

Slow burn romantasy is built on the deliberate withholding of romantic resolution across a long arc, often spanning multiple volumes of a series. The reader knows the connection exists before the characters admit it, and the pleasure is in watching the acknowledgment become impossible to defer. Romantasy's series format is particularly well suited to slow burn because the fantasy plot gives the writer legitimate reasons to delay the romantic resolution across hundreds of thousands of words without losing reader patience.

Subgenre

Dark Romantasy

Dark romantasy applies the conventions of dark romance to a fantasy setting: morally complex protagonists, power imbalance, danger as a feature of the relationship rather than an obstacle to it, and emotional intensity pushed into territory that mainstream romantasy avoids.

Best Romantasy Books

The novels that built modern Romantasy, shaped reader expectations, and still function as essential comp titles for writers working in the genre today.
A Court of Thorns and Roses Sarah J. Maas
A Court of Thorns and Roses
Sarah J. Maas
Fourth Wing Rebecca Yarros
Fourth Wing
Rebecca Yarros
The Cruel Prince Holly Black
The Cruel Prince
Holly Black
From Blood and Ash Jennifer L. Armentrout
From Blood and Ash
Jennifer L. Armentrout
Throne of Glass Sarah J. Maas
Throne of Glass
Sarah J. Maas

Read More About Romantasy

Want to go further? Explore our guides on worldbuilding, magic systems, and publishing your Romantasy series.

Explore Related Genres

Romantasy shares its DNA with these neighbouring genres. Explore their complete guides.

Romantasy Frequently Asked Questions

Your world is waiting for readers

Bring your manuscript to Spines and we’ll take it from final draft to global distribution — your words, your world, your way.

Talk with us!
Talk with us!