A complete world arrives already built, running on MythUI — then hands you the tools to make it yours.
Survivors, villains, and faces from across Raccoon City — each with a fully written personality, history, and voice. They aren’t set dressing; they think, react, and remember, and the world is populated the moment you arrive.
The RPD, the Hospital, NEST, the Spencer Mansion, the sewers, the factory, and dozens more — every one hand-written with its own atmosphere, dangers, and secrets. A whole city to explore, not a backdrop.
A never-ending, Umbrella-engineered simulation of the 1998 outbreak — an original premise built to honor how Resident Evil’s world really works. The engine drives original events and your choices; it never just retells a game’s plot.
Every named character ships with their own portrait, shown as you meet them and in their bio. Prefer your own vision? Drop in your own art and the engine uses yours instead — built-in by default, overridable any time.
Each character carries their own temperament, likes, dislikes, and relationships, so they behave like themselves. Treat them well or cross them and they notice — conduct and gifts nudge how they feel about you, turn after turn.
Umbrella’s entire catalogue — zombies, Lickers, Hunters, Tyrants, Nemesis and worse — woven through the world and introduced in the moment each one appears, never front-loaded or name-dropped. The dread stays earned.
Open the Story Studio right inside the engine and shape the whole world by hand — your character, the premise, every place, and the full cast, canon and invented alike. Set how each one feels about you before a word is written, then save it to a single file and hand it to another player to live your version of the world.
Hundreds of hand-written scenes that come looking for you when the world is ready — a friend pulls you aside, a guarded heart finally cracks open, an enemy forces a reckoning. Tied to the right person, the right place, and the right moment, and drawn from so deep a well you could play for a year and never meet the same one twice.
Earn someone’s devotion and every threshold is marked with a moment that’s unmistakably theirs. Push them the other way and it cuts just as deep — warmth curdles to cold, cold to open hostility, and in real danger a betrayed ally can turn on you.
Atmospheric sound is built into the experience, layering the city’s dread underneath the story. The horror isn’t just described — you hear it, and you can toggle it to taste.
Choose your pressure: from Assisted for a softer, story-first run up through Standard, Hardcore, and the punishing Inferno. The world tightens its grip exactly as much as you want it to.
Certain havens across the city are flagged as safe — places to patch wounds, regroup, and breathe. Inside a marked safe zone the engine eases the threat, giving the story room between the horrors.
Once you’ve discovered a location, move there directly instead of replaying the trip. Cross a sprawling city in a click and keep the story moving where you want it.
Open Materia Story Studio right from the title screen and build your own corner of the world in one place — your character, a whole cast, new places, and lore — then export one file and load it into the engine. It all drops straight in. Everything you add sits on top of the world that’s already here; it never overwrites it. No technical know-how needed.
Add your own survivors and faces to the world at any time — name them, describe them, give them a bio, likes, and dislikes. The engine folds them straight into the living world and tracks them like anyone else.
Build new places onto the map — a hideout, a shop, a horror of your own design — with their own descriptions and even their own residents. The city grows however you want it to.
When the story introduces someone new on its own, the engine notices and starts tracking them automatically. Like who turned up? Canonize them into the permanent cast with one click. Don’t? Dismiss them just as easily.
The engine tracks how every character feels about you — built-in cast, your own creations, and emergent characters alike. Bonds rise and fall with your conduct, your gifts, and your choices, and the world remembers where each one stands.
The engine remembers. Characters, places, choices, and everything that’s happened stay consistent across a long campaign, so the world holds together instead of forgetting who you are and what you’ve done.
You’re the author. Don’t like how a moment played out? Edit it, delete it, or regenerate it until it’s right. The story bends to you — nothing is locked in against your will.
Export your entire session as a cleanly formatted text file with a single click. Write your fanfiction as you live it — then save the whole thing to keep, share, or carry into the next chapter.
Free to play and built to run on your own AI provider — bring your key, set your terms, and the world is yours. Everything above is built in and waiting the moment you enter.
A world already alive — and entirely yours to shape.