3D world builder

3D World Builder — Describe a World, Walk Through It

You write one sentence, and the world comes back as geometry you can walk on — a globe from far away, a street up close, weather and time on top.

Lantern Harbor at dusk, a harbour town riding the curve of a small planet

Rooftop Town at 17:00, a school campus on the horizon of a tiny planet

Neon Crossing, signs and street lamps over a rain-soaked scramble crossing

Tower Plaza, glass towers on a green shelf above the sea

Genshin Impact — Lantern Harbor. Four tiers of gold roof, a red gate, a stone path. You are standing on the shelf at 15:24. — **Lantern Harbor** — Four tiers of gold roof, a red gate, a stone path. You are standing on the shelf at 15:24.
Open the world

Genshin Impact — The same town from orbit. Scroll out and the harbour becomes one island on a curved ocean planet. — **The same town from orbit** — Scroll out and the harbour becomes one island on a curved ocean planet.
Open the world

Genshin Impact — Walks to the coast. Keep walking and the ground runs out into a sea you can swim in. — **Walks to the coast** — Keep walking and the ground runs out into a sea you can swim in.
Open the world

Horimiya — Rooftop Town. School block, courtyard and cherry trees on a hill, 16:12. — **Rooftop Town** — School block, courtyard and cherry trees on a hill, 16:12.
Open the world

Horimiya — Rooftop Town from orbit. One campus on a continent, ocean on both sides, clouds at the rim. — **Rooftop Town from orbit** — One campus on a continent, ocean on both sides, clouds at the rim.
Open the world

Jujutsu Kaisen — Neon Crossing. A scramble crossing at 21:24 in rain — twenty signs, four lamps, wet ground. — **Neon Crossing** — A scramble crossing at 21:24 in rain — twenty signs, four lamps, wet ground.
Open the world

Jujutsu Kaisen — Neon Crossing, pulled back. Eight towers around the crossing; the district keeps its own horizon. — **Neon Crossing, pulled back** — Eight towers around the crossing; the district keeps its own horizon.
Open the world

The Boys — Tower Plaza. Six towers and a flag billboard over a granite plaza, overcast at 13:12. — **Tower Plaza** — Six towers and a flag billboard over a granite plaza, overcast at 13:12.
Open the world

The Boys — Tower Plaza from orbit. A city that fits in your hand, and the sea it sits in. — **Tower Plaza from orbit** — A city that fits in your hand, and the sea it sits in.
Open the world

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Lantern Harbor

Genshin Impact · four tiers of gold roof, a red gate, a stone path.

What Neta Studio builds

You describe the place — a lantern harbour, a school rooftop, a neon crossing — and Studio writes the world as a real-time 3D scene in the browser. Every world has a ground you can stand on, water you can swim in, weather you can switch and a clock you can move. Then it publishes at a link you can send.

Walkable, not a render — WASD or the arrow keys move the explorer, drag steers or orbits, scroll zooms from street level to the whole planet.
Time and weather as dials — Drag the clock from noon to midnight and the light, sky and windows follow. Rain, snow or clear, one tap.
Built from your world — Start inside a world you already have and its cast, landmarks and art direction come along — or start from nothing.

Questions

Do I need Blender or Three.js?

No. You describe the place and answer a couple of questions; the geometry, the camera and the controls are written for you. If you do code, the published work is plain HTML and JavaScript you can open and edit.

Is the world really walkable, or is it a video?

Really walkable. It is a live scene in your browser: you move a character across the surface, orbit around the planet, and the ground curves away under you. Nothing is pre-rendered.

How big can a world be?

From one street corner to a whole planet. The four worlds above run from a single harbour shelf to an ocean globe with three continents.

What can I put in it?

Terrain and water, landmarks and roads, trees and props, weather, a day-night clock, and the characters from the world you started in. Ask for a thing by name — a torii gate, a scramble crossing, a flag billboard — and it gets built.

Can it use characters and places I already have?

Yes. Open a world that already has atoms — a cast, locations, lore — and the build reads them, so the harbour matches the world it belongs to instead of a generic town.

Can I change it after it is built?

Yes, in the same chat. Ask for a second pagoda, a different hour, more rain — it edits the world it already made and republishes the same link.

Does it work on a phone?

Yes. Drag to look around, pinch to zoom, tap the ground to walk. The four worlds above run in a phone browser without an install.

What do I end up with?

A published work with its own link and cover. Send it, embed it, or keep building in the same world.

Start with one place

A harbour, a crossing, a rooftop — one sentence is enough. You can add the rest by talking to it.

Build a harbour world