BUILT FOR INFINITE EXPLORATION

The world unfolds
beneath your feet.

3D worlds, generated as you explore.

Stream new regions as you explore. Edit the world through language, shape what comes next, and keep your changes.

Watch demo Read the blog Repository

Streaming
World Generation

Dynamic
Scene Editing

Stateful
NPC Interaction

Persistent
World State

THREE VIEWS OF THE SYSTEM

A world that grows,
responds, and persists.

A concise edited tour combining long-range streaming with language-guided editing and interaction.

Open / download 1080p · 59 MB ↗

Edited overview · Long-range traversal and interaction in one cut.

From plan to world.
Code and state.

Planning and generation run entirely on code and structured state. No visual inputs or intermediates.

HIERARCHICAL PLANNING

Plan far away.
Resolve nearby.

Plan regions ahead. Generate detail nearby. Build playable scenes that retain their state.

Animation showing Macro Planner assigning roles to a five by five region and Micro Planner resolving a nearby tile into four zones

MACRO PLANNER · REGION

Shape the world

Connect terrain, settlements, and roads across regions.

A simplified Macro Planner natural map with ocean, mountains, rivers, forests, desert, settlements, and the next planning frontier

MICRO PLANNER · TILE

Decide the detail

Choose streets, buildings, vegetation, and actors as you approach.

A city-scale Micro Planner plan abstracted from a generated aerial view, with dense blocks, arterials, local streets, civic facilities, parks, and edge connections

LOCAL CODE

Build and remember

Compile a playable scene. Preserve object identities, layout, and edits.

A simple animated flow from a planner output through local scene generation to a saved playable tile

Five landscapes.
One continuous world.

Explore cities, farmland, forests, deserts, and coasts on one continuously expanding map, planned and generated as you move.

City blocks and a paved intersection — City

A rural house beside planted crop fields and a dirt road — Farmland

An open view through layered trees and forest canopy — Forest

Cacti and boulders on sandy desert terrain — Desert

Boats on the sea beside a palm-lined beach — Coast

LANGUAGE-GUIDED EDITING

Change the landscape.

Specify the next unexplored region, then reshape an existing desert landscape into forest and water.

STATEFUL NPC INTERACTION

Meet the inhabitants.

Ask an inhabitant for grounded directions, then call and feed a sheep in the same persistent world.

RESPONSE TO VISIBLE CONTENT

From plan
to scene.

With Jev as planner, estimated response time drops to ~0.7 seconds, compared with ~30 seconds for Claude.

planner response0.70 s

Post-response processing + rendering1.60 s

Estimated total2.30 s

The world unfoldsbeneath your feet.

A world that grows,responds, and persists.

From plan to world.Code and state.

Plan far away.Resolve nearby.