Finalverse
Concept illustration of a future waterfront city, not an in-world screenshot

An AI-native persistent world

A living world.
A place of your own.

Explore with friends. Meet AI citizens. Turn an idea into a place you can return to.

Mac developer preview · Limited world preview · One MutSea account

Future-world concept illustration. Native development captures below.

Stay curious

A world becomes meaningful when there is someone to meet, something to make, and a reason to come back.

Welcome to Finalverse

More than a place
to look around.

A persistent 3D world where people and AI citizens share space, conversation and creation.

Our desktop client connects to MutSea, the spatial runtime that keeps identities, objects and world history. The current development world is small. The ambition is to make it yours.

The idea behind Finalverse
Native Finalverse development capture of a coastal arrival court and pavilion
The arrival court · Native development client, October 2026
01 / EXPLORE

Follow your curiosity.

Walk the harbor, discover a garden, find a quiet place by the water.

02 / CONNECT

Meet someone new.

Share a place with people and meet persistent AI citizens such as Lumi.

03 / CREATE

Leave something behind.

Shape a home or compose a gathering place. Your changes belong to a persistent world.

Lumi, the small mint-colored AI citizen, outside her native in-world home
Lumi at home · Native development capture

Meet Lumi

Someone to
come back to.

Lumi has an identity, a memory, a home and a garden.

In our development world, she walks, greets visitors and tends her garden. Her identity persists across restarts. We are extending that foundation into a companion who helps you build, one approved change at a time.

Create with Lumi

Genesis characters

A different way
to be yourself.

Nine original character templates, from human explorers to elemental beings. Built for the same world, with distinct identities.

Elara Vayne / Explorer
Auren Caelwyn / Worldbuilder
Kai / Intelligence
Terra / Nature
Ignis / Creation

The first neighborhood

Start at the harbor.

A beacon at the arrival plaza. A pavilion to gather in. A lakeside overlook. Lumi’s cottage garden. The beginnings of a shared place.

Harbor pavilion with benches and flowering trees in daylight
Day · Native development captureArt, lighting and navigation are being refined.

Places from a sentence / In development

Describe a place.
Make it together.

“A picnic spot for six, near the water.”

Lumi proposes a layout using an approved content library. You review the plan. The world checks the placement and permissions. You approve the build, inspect the result and can undo the operation.

Save a recipe. Remix it into something of your own. The hosted Mac creation/Undo workflow has passed native acceptance. See the actual demo and its limits.

How MutSea keeps changes accountable

Example workflow

“A quiet picnic spot for six.”
01 / ProposeLibrary assets, a clear plan
02 / PreviewYour choice to build
03 / ReturnPersistent place, one-step Undo
Native development captures of a garden nook, lakeside lookout and six-person picnic place
Built in the native world · An example, not a live web generator
Actual Mac test: Lumi's approved reading nook visible in the native world
Hosted Lumi co-building · Native acceptance, October 15, 2026

Latest working demo

A plan.
A place.
An Undo.

147 native parts, built only after approval. Persistent goals and memory. A recorded operation that can be reversed.

The hosted test returned from 570 scene parts to its 423-part baseline after Undo. See the actual captures and a captioned recap.

Watch the native test

Build the first chapter with us

A little curiosity.
A place to begin.

Start with your own avatar and a place to arrive. Explore the starter world, try the creation tools and help shape what comes next.

Create your account

Choose your avatar name and starter character. MutSea provisions your appearance and home before enabling login.

The Mac developer preview is downloadable from GitHub. Registration is limited while we test capacity and first visits.

Before you arrive

A few good questions.

Can I enter Finalverse today?

The experimental Mac preview is available from GitHub. Create a world account through MutSea, wait for provisioning, then use the same First Last name and password in Finalverse. Preview capacity is limited; registration pauses when the world is unavailable.

Is Finalverse a browser world?

The working experience is a desktop viewer. macOS is the current product focus. Wider desktop, mobile and browser access are part of the longer-term direction, not additional platform downloads offered today.

Does the AI change the world on its own?

For the creation workflow, AI proposes a structured plan. The world validates it and the person approves the build. Operations are recorded, with Undo where supported.

How are Finalverse and MutSea related?

Finalverse is the people-facing world experience. MutSea is the persistent spatial runtime behind it. It is also the foundation we are developing for reusable worlds, communities and creator tools.