
A real-scale universe: walk your street, talk to the locals, fly to the edge of the observable universe. By @SimulationFold, new updates revealed all the time.
Joined October 2026
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People keep asking if the universe is a simulation.
So we built one.
Real scale. From city streets to Saturn, a galaxy and a black hole, and everything in between. With an AI guide that can fly you anywhere and explain anything you see.
Captured in a development build.
What does a day look like on Mars? On the Moon? On Europa? On a moon of Saturn?
The sky is real.
Captured in a development build. Sign up for updates: universeone.io
Start on a street in San Francisco.
Keep going. Past the Moon, past the Milky Way, out to the edge of the observable universe.
One full-size universe. The sky is real.
Captured in a development build. Sign up for updates: universeone.io
A whole Himalayan night in 11 seconds.
Dusk, stars, then dawn, captured inside UniverseOne. We sped up the simulation clock; the terrain is modeled, night exposure enhanced, and wind added.
Where would you set up to watch the night sky?
Ambitious small teams are relying on AI to hypercharge their work - this allows teams of 10 to work like they're a 100. @finkd and @Meta please ensure that for non scraping, allowed use cases, such as AI assisted computer usage, Meta doesn't unfairly restrict business accounts mistakenly. We know our team would greatly appreciate it. If we're all moving towards a future where AI truly emboldens humans, let's ensure false positive "bot" detectors improve alongside it. If real humans are getting real work done faster by leading AI, we shouldn't stop them. If it's a malicious bot or an unauthorized scrape, that's completely understandable.
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Fly there. Walk it.
From clouds drifting over Earth to boots on Enceladus, every scene was captured in our UniverseOne engine. Where would you go first? The astrophysics will follow you along, we'll make sure of that, so it's magically real for you effortlessly.
universeone.io/
Setting expectations, straight from the team.
UniverseOne won't look like Cyberpunk 2077 with mods. Not in the first release. We'd rather tell you now than have you find out later.
We've put far more of our effort into making the whole universe look right, flying between stars, planets and galaxies, than into the city streets. Our cities will still look great, but some big games do cities better. We're a small team, but an ambitious one.
What it will have is something that, as far as we know, no game has put together:
- A real city where the people think. They aren't scripted NPCs: stop any random person and they can help you with your math or science homework
- Ways to get around, from walking to cars, planes and flight into orbit
- A full-scale solar system where planets really orbit and spin, and you control time
- One continuous universe, all the way to the edge of the observable universe, that does its best to match our universe in exact objects and positions.
We're not trying to have a No Man's Sky launch moment. If we can't show it, we won't promise it.
We'll keep showing you what it really looks like as it gets better.
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Introducing UniverseOne.
Start on your street. End up at Saturn.
Ask the guide about what you see along the way.
If you could visit one place in the universe, where would it be?
Captured in a development build. Follow for new updates revealed all the time.
Hi @Meta, we're a tiny game studio and have been stuck on an ad restriction since Oct 28, with only automated replies so far. We'd love to talk to a person who can review it. Any chance someone could help? Thanks so much!
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Hi @instagram! Our account @universeonesim can't create new ads since it was linked to a restricted business account by mistake. We've tried the support chats but haven't reached a human yet. Is there someone who could take a look? We'd really appreciate it 🙏
Hi @MetaforBusiness 👋 We're a small indie studio making UniverseOne, a space exploration game. Our business account was restricted right after setup, and every support chat so far has been automated. Could someone on your team help us reach a person? Thank you!
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SpaceEngine: the real universe, nobody to talk to.
GTA 6: one huge city.
No Man's Sky: endless planets, not the real universe.
UniverseOne: a real city where people talk back, then the entire observable universe and beyond, into the darkness.
Captured in a development build.
We're a small, independent team from different corners of the world.
We set out to build the whole universe, full-sized, for everyone to explore: from your own street to the edge of the observable universe. No matter where you're from. 🌍
Hello · नमस्ते · Hola · 你好 · Bonjour 👋
Follow along. We're just getting started.
Captured in a development build.
Introducing UniverseOne 🪐
Start on your street. End up at Saturn.
Ask the guide about what you see along the way.
If you could visit one place in the universe, where would it be? 👇
Captured in a development build. Follow for new updates revealed all the time.
As far as we know, no game has done this before:
🏙️ Walk a real city and talk with the people there
🚀 Fly up through the clouds into orbit
🌌 Keep going to the edge of the observable universe
One continuous world. Where would you go first? 👇
Captured in a development build.
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Is the universe a simulation?
This one is. We’re building it.
From city streets to Saturn and beyond: UniverseOne, captured in a development build.
Where would you go first?
Earthrise, from above the Moon. 🌍
Captured in UniverseOne, our universe explorer in development at SimulationFold Studios. An in-simulation camera ascent with optical zoom, set to an ambient score.
Where would you go next?
universeone.io


