Just for you — it labels your save file.

The world is already built — this is how you nudge it. Set the tone, setting, and genre you want to lean into and the narrator shapes things around it. A light touch is enough; you don’t have to describe the whole world yourself.

Who are you here? Name, bio, and a 1:1 (square) facial portrait — it sits beside your health bar at the bottom. The character you name is removed from the relationship panel — the world treats you as that person.

Upload .txt files of anything you want the narrator to treat as established fact — backstory, rules, extra people or places. Heads up: everything here is fed to the AI, so the more you load, the more tokens each turn costs. Whenever you can, add characters and locations right inside the engine instead — it’s easier, cheaper, cleaner, and only loads them when they’re actually in the scene.

This World Engine ships with built-in portraits for its characters. Want your own look? Load a folder of images named after your characters and locations and they override the defaults. Anything named and mentioned in the story appears in the portrait window automatically (1200×1800 / 2:3 is the ideal fit).

Load your own sound effects, ambience, and background music into the slots provided.

Sets how forgiving or brutal the world is — Assisted gives you breathing room, Inferno does not.

Resident Evil comes pre-built with 33 named characters — S.T.A.R.S. members, survivors, Outbreak civilians, and Umbrella’s worst — each with their own personality, look, bonds, and likes/dislikes, drawn from the lore.

And 82 hand-built, interconnected locations across 16 districts — the RPD, the Spencer Mansion, the NEST lab, the hospital, the streets of Raccoon City and more. The narrator knows all of them and brings the right faces and places into your scenes naturally. You never have to introduce them — but you can build your own too.

The Characters panel tracks the full built-in cast and everyone you meet along the way. Each carries a Bond meter and a Romance meter that shift with how you treat them — the narrator moves them as the story earns it, and you can nudge the sliders yourself.

Every character has things they like and things they don’t. Gift or act in line with a like and their bond ticks up; hit a dislike and it slips — small, fine nudges layered on top of the bigger swings your overall conduct earns. Open a character’s bio to see them.

People you meet in play appear under Emergent (collapsible). Hit ★ Canonize to make one a permanent cast member across every future story.

Build someone from scratch — name, physical description, bio, likes, dislikes, and extra notes — and they drop straight into your cast. No need to meet them in-world or write a lore file. Tick “not met yet” to plant them quietly so they turn up when the story reaches them (or when you name them).

Open any character’s full live profile at any time — portrait, bond/romance, appearance, bio, notes, likes and dislikes, exactly as they stand right now.

Tweak a character’s physical description, bio, or likes/dislikes — Replace what’s there or Append to it. Edits apply to the current story only (a scar this run won’t haunt a brand-new game; it rides along if you compress-continue). Reset reverts to default, Export saves the profile as a .txt.

The Locations panel lists every place, grouped into districts you can expand.

Click any location and Travel to — the narrator moves the scene there instantly and picks up where that place would.

Build your own place — name, description, and a safety tier. It joins your map for this story.

Rewrite a location’s description for this story, and tag which met characters are based there. When you visit, those characters are present and the narrator treats the place as their home.

Safety is automatic now — it follows wherever you are, no button to press. Three tiers:

A hideout or secure spot. Danger is off, and you can Rest to fully recover. The Safe indicator lights up on its own. 21 of the world’s locations are safe havens.

Calmer ground — the world holds danger back, but it isn’t gone. No full rest.

Out in the open. Anything can happen.

This app runs on trust. The narrator tells you when things happen — when you’re hit, when you find relief, when you reach safety — and it’s on you to reflect it.

Press when the story injures you. Two hits before you go down; then the narrator writes the moment and brings you back at your home base.

Recover one level at a believable beat — patching up, catching your breath. Won’t exceed your max.

A genuine safe point fully heals you and resets the escalation baseline.

Nobody’s watching. But the story is richer when the mechanics match what’s happening.

Type your action, then press an emote button to send it wrapped in an emotional delivery — Flirty, Heartfelt, Angry, Silly, Scared, Confident, Sad, Happy, Aggressive, and more. The emote button is your send button; it colours how your character says or does the thing. Pick the one that matches your headspace.

Steer the narrator without typing: Slow Down, Speed Up, Heat Up, Cool Down, More Dialogue, More Action, More Detail, Surprise Me. Fire one alone, or alongside a typed action — if you type and nudge, both send together.

The highlighted row does the heavy lifting: New Character (introduce someone new), Offer Options (hand you choices), Trigger Event (make something happen), and Random (roll the dice and surprise you).

On the story page, Continue advances the scene with no input from you — let the narrator keep going, let the world breathe, let time pass.

On the story-select page, Continue starts a fresh story that carries the compressed memory of your most recent one — a clean slate that still remembers who you are and what happened. Perfect for opening a new chapter without losing your history.

When the token warning appears, compress. The narrator condenses everything so far into a tight summary and continues from there. Your chat history stays fully intact — only the narrator’s working memory is condensed. It keeps API costs low and sessions smooth; think of it as saving progress. Your per-story character and location edits ride along through a compress.

This is the one you’ll come back for. Export saves your entire run as a clean, readable text document — every narrator passage and every choice you made, formatted like a finished story. The story you lived, captured and kept.

Archive a campaign, share a session, or hold on to the run that hit different. Individual characters and locations export as their own tidy profile files too — perfect for carrying someone into a future world, story, or save.

Open Story Studio from the top of the story screen to build and edit your world visually — no files to hand-write. Lay out characters with their looks, bios, and likes, place locations, and drop in lore, all in one panel that saves itself as you type.

Export your build as a .mmworld pack to keep or pass around. To play one, open the Studio, choose “Open / edit a file,” then “Save & Start Story.” Browse ready-made worlds on the hub’s Studio Saves page.

💾 Save writes your whole run — story, characters, locations, and progress — to a .mmsave file on your device. 📂 Load brings it back any time, right where you left off. Nothing is stored on our end; your save lives only on your machine.

Hit 🌐 Web Export to save a session as a shareable file. Email it in and we post the best runs on the hub’s Session Exports page — rendered just like the engine, so others can read the story you lived.

Your private notepad (tucked below Locations). The narrator never sees it. Track clues, threads, and relationships — and if the narrator ever drifts from something you established, paste a reminder from here into your next message to pull it back on track.

Not feeling the last response? Regenerate re-rolls it — same moment, fresh take. Your input stays; the narrator simply tries again. Use it when a reply misses the tone or goes somewhere you didn’t want.

A Gore toggle and slider set how graphic the violence gets — from bloodless, with the worst kept off-screen, all the way to unflinching. Set it where you like; the narrator follows your dial and never pushes past it.

MarrowMyth is designed and optimized for Grok. Differences in behaviour, output quality, or experience on other models or providers are expected and stem from that intended compatibility.