A universe,
from first principles.

Lv4 Multiverse simulates inflation → stars → planets → life → civilisations using real physics tools. Watch it run. Read its history. Ask its Historian anything — every answer traced back to the computed record that produced it.

Join the waitlist How it works →

CAMB · LINX · REBOUND · ExoPlaSim · 21cmFAST · Taichi

pre-launch

0 on the waitlist · target: month-3 public beta · Pure + UDSH at launch

computing 7 ERAs: Cosmology · Reionisation · Dark Matter · Planetary · Abiogenesis · Evolution · Civilisation

how it works · four steps

Seed

Name it. Pick Pure or UDSH. Quick / Standard / Deep.

Preview

30 seconds. See the first planet. Forecast the rest.

Commit

Run completes in the cloud. Close the tab; it keeps going.

Explore

Wiki, Historian, Compendium, Quest Board. Fork. Share.

Real physics foundation

Seven ERAs, each using the published tool scientists actually use - CAMB for the CMB, REBOUND for orbits, ExoPlaSim for climate.

Watch a universe form

A Melvor-style dashboard streams live events as ERAs complete. The sim keeps running in the cloud while your tab is closed.

Ask its historian anything

Every answer from the Akashic Historian cites a specific computed record. No invention. A birth certificate in physics, for every claim.

two modes · one engine

Pure Science

100% real physics.

Every event traces back to a published tool and peer-reviewed method. Use it to build hard sci-fi, test cosmological scenarios, or just learn how a universe actually unfolds.

UDSH Extended

Physics + a computed mana field.

Adds a dark-sector coupling that produces a computed mana density field. Fantasy-shaped patterns — attuned lineages, sacred grounds — emerge from the math, not from a writers' room.

join the archivists

Be first into the Multiverse.

We're in private build. The first 100 true-believers get access to the Founder's Pass (lifetime, $399 one-time, never offered again).

100 founder slots still reservable · no card required

Frequently asked

What actually runs on your servers?

CAMB, LINX, 21cmFAST, REBOUND, ExoPlaSim, Taichi N-body. Full list on /engine.

Can I run this offline?

Not yet. The long runs (up to ~10 hours) need our GPUs. A local-first option is on the roadmap.

What about GPL / ExoPlaSim / REBOUND?

We comply via the SaaS model - we never distribute binaries. Licence audit is public.

Can I export my universe?

Yes. JSON event-store dump + wiki markdown + image zip. Forever.

A universe,from first principles.

Frequently asked

A universe,
from first principles.