Prompt-to-world engine

AI Fanfic Generator: Play Your Story

Looking for an AI fanfic generator? AuxWorld turns your fanfic setting into a playable world in 30 seconds. Type the scene, then step inside.

Make my world See pricing

A writer's notebook and open book beside a laptop showing an explorable fantasy forest world

What it does

Your fanfic, with a place to stand in

AuxWorld does not write your chapters. It builds the room, the street and the weather, so your story finally has somewhere to happen.

Prompt-to-world in 30 seconds

Paste the paragraph that describes your setting. The engine returns an explorable 3D world with characters, physics and ambient music.

Fork the canon

Every world is forkable. Change one detail, a season, a ruler, a missing door, and see what the story becomes. Fork it. Change one thing.

Readers step inside

Share a link and friends spawn into your world together. Read-alongs and roleplay nights without any launcher or setup.

A score that fits the scene

Each world gets a generated soundtrack that matches its mood, from cinematic orchestral to synthwave, without you touching a mixer.

A gallery of other dreams

Browse worlds built by other writers and creators. Borrow a setting for inspiration, then take it somewhere new.

Your words stay yours

You keep writing in the tools you love. AuxWorld is the stage next door, not a replacement for your draft.

How it works

From draft to doorway in three steps

No game engine to learn. If you can describe a scene, you can build one.

1

Type the scene

Take the setting paragraph from your fanfic. Name the place, the weather, the mood and one strange detail. Weird is good, abstract is fine.
2

Generate the world

The engine builds environment, characters, physics and a soundtrack from your words in under 30 seconds on average.
3

Step inside and share

Walk around. Invite friends with a link. Fork the world when the plot changes. Your story now has a location people can visit.

For the lone writer

Test your setting before you write the scene

You have a rainy city in your head and three pages of notes. Type it in, then walk the alley yourself. Notice where the light falls, how far the next door is, what the street sounds like. Details you only find by standing there make the next paragraph sharper. A prompt that works well looks like this: `a rain-soaked neon alley in a city that never sleeps, a lantern-lit noodle bar at the end, a stranger who knows your character's name`. Short, concrete, one odd detail.

Check sightlines and distances before writing a chase scene
Find the sensory details your notes were missing
Keep a world per chapter and compare them side by side

Build my first scene

A figure carrying a lantern walks down a rainy neon alley, a story setting ready to explore

For fandoms and friends

Roleplay night, minus the setup

Fanfic communities already run on shared worlds: roleplay threads, headcanons, crossover what-ifs. A generated world gives that energy a physical space. Build the castle from your favourite fantasy canon, send the link to your group, and play out the scene together instead of describing it. Because every world is forkable, a bold idea from one person becomes a new branch for everyone. One friend moves the castle into the clouds. Another floods the courtyard. Both versions exist.

Up to 8 players on Free, 32 on Creator
In-world voice chat, no launcher
Forkable worlds for crossover and what-if branches

Invite my group

Two friends laughing on a couch playing a shared fantasy castle world on a TV

Know what you are getting

Text generator or world generator?

Different tools for different jobs. Many writers use both.

What you need	Text fanfic generator	AuxWorld
Main output	Paragraphs and chapters	A playable, explorable world
Best for	Drafting prose and plot ideas	Seeing and walking your setting
Reader experience	Read the story	Step inside the story
Sharing	Paste text or post a link	Share a link, friends spawn in
Remixing	Copy and edit text	Fork the world, change one thing
Time to first result	Seconds to minutes	About 30 seconds

Pricing

Start free. Go wild.

No credit card required. Your first world is on us.

Free

$0

For your first few scenes

3 worlds per week
Up to 8 players
Public worlds
Subtle watermark

Start free

Creator

$12 /mo

For writers who build every week

Unlimited worlds
Up to 32 players
Private worlds
Export a 60s video clip
Priority generation

Go Creator

Studio

$60 /mo

For teams and branded worlds

Everything in Creator
Custom 3D asset upload
Branded worlds
5 team seats
API for embeds

Go Studio

Questions

AI fanfic generator, answered

Does an AI fanfic generator on AuxWorld write chapters for me?

No, and we would rather say it upfront. AuxWorld builds the place your story happens in: a playable, explorable world generated from your prompt in about 30 seconds. You still write the scenes. Think of it as the set, the weather and the extras, not the script.

What can I turn into a world from my fanfic?

Anything you can describe: a setting, a mood, a crossover premise, a single scene. Paste the paragraph that captures the location, add the tone you want, and the engine builds a world with environment, characters, physics and a generated soundtrack. The more specific the prompt, the more it feels like your canon.

How long does it take to generate a world?

Around 30 seconds on average. You type a prompt, wait about as long as a kettle takes, then step inside. If the first result misses, change one detail in the prompt and generate again. Iteration is the whole craft.

Can my readers or friends explore the world with me?

Yes. Share a link and friends spawn into your world. The Free plan supports up to 8 players, and Creator raises that to 32 with in-world voice chat. It works well for read-alongs, roleplay nights and fandom meetups.

Can someone else remix my fanfic world?

Worlds on AuxWorld are forkable by design. Someone can fall into your world, change one thing and reshare it. Free-plan worlds are public. If you want to keep a world to yourself, private worlds are part of the Creator plan.

Is it okay to build worlds from existing franchises?

Fan work built on someone else's universe stays fan work, and the rights to that universe stay with its owners. Keep your projects non-commercial, credit the source, and check the rules of the fandom you write in. We cannot give legal advice, so when in doubt, build an original setting inspired by your canon.

Is there a free plan?

Yes. The Free plan costs $0, gives you 3 worlds per week and up to 8 players, with a subtle watermark and public worlds. No credit card needed. Your first world is on us.

What if I only want text fanfic, with no game world?

Then a plain text generator is the right tool, and AuxWorld is not trying to replace it. Where we help is the step after the draft: when you want to walk around the town your characters live in, or let a reader sit in the room where the scene happens.

Your fanfic is a place. Step inside.

Type a scene, wait about 30 seconds, and walk through the world your story has been waiting in.