Underfiction: AI Roleplay

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About this app

She opens the letter. The room is quiet. You decide what happens next.

Underfiction is interactive storytelling in literary prose. Step into an authored opening or begin with a sentence of your own. Direct the scene from inside it or outside it; the engine follows.

— START WITH A STORY, NOT SETUP —

Enter Pride and Prejudice, Jane Eyre, Dracula, Persuasion, or Sherlock Holmes at a moment already in motion. Or choose one of four original worlds: a Regency house party, a summer estate, a fantasy tavern, or a deep-space freighter.

Authored openings take you straight to the first meaningful choice. Prefer a blank page? Create any setting, cast, and tone you want.

— YOU’RE THE DIRECTOR —

Write what your character says or does:
• “She opens the letter.”

Speak as anyone in the cast:
• “Have the captain lie about the fuel.”

Or direct the narrator:
• “Slow down. Let the silence do the work.”

Choose first or second person, present tense, or inner thoughts. Add a standing direction — “keep her unreliable” or “no dialogue tags” — and every turn in that story follows it.

— PROSE, NOT CHAT —

Every response is written as fiction: scene-setting, interior monologue, tension, rhythm, and subtext. Choose among leading language models and switch mid-scene when you want a different voice.

— STORIES THAT REMEMBER —

Scenes work like chapters. When one ends, its essential events carry into the next. Long scenes compress older passages automatically, so the story can continue without losing the thread. Summaries and compression are free; you pay only for generated prose.

— SEE IT. HEAR IT. —

Attach a face, room, or photograph and let the narrator write from what it sees. Generate character portraits and scene art, animate an image, set a backdrop, or have any passage read aloud in the voice you choose.

— YOUR LIBRARY, EVERYWHERE —

Stories, characters, and worlds follow you to every device you sign in on. Stories are encrypted at rest on our servers, and we don't read them. One switch turns sync off — then your library lives on that device alone. Either way, export a readable story at any turn, carry a complete story with its cast and media, or move your entire library between your devices in one portable Underfiction file.

Underfiction also imports Tavern character cards and world books, so you are never locked into one library.

— CREDITS, NOT SUBSCRIPTIONS —

Start free. When you want more, buy credits for the words and media you generate. Credits do not expire. No recurring plan, no ads, no selling your writing.

Open a story. Take the pen.
Step into a classic or create your own story. You direct; the engine writes.
Updated on
Sep 7, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, Financial info and 3 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

- A turn keeps writing when the connection drops or you leave the app, and picks up where it left off when you come back.
- Stopping a turn now lands even when the network swallows the first attempt.
- Logs list what images, clips and narration cost, not just turns.
- Stories stop renaming themselves mid-chapter, and a story opens on its newest turn.
- Fixes throughout.