
Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.
Modeled estimate, not a reported figure. How we estimate →
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About
Universe Sandbox is a realistic physics-based space simulator that allows you to create, destroy, and interact on an unimaginable scale.
It merges real-time gravity, climate, collision, and material interactions to reveal the beauty of our universe and the fragility of our planet.
N-body simulation at almost any speed using Newtonian mechanics. Real science, real physics, no supercomputer required.
Epic, mind blowing collisions of massive planetary bodies that leave behind molten craters.
Start with a star, then add a planet. Spruce it up with moons, rings, comets, or even a black hole.
Watch sea ice grow and recede with the seasons because of a planet’s tilt - change the tilt and change the seasons. Or move planets close to a star and see the oceans boil away as the surface heats up.

Watch a supernova unfold by colliding two stars, cranking up their mass, or making them explode at your whim.

Hitch a ride with spacecraft including Juno and New Horizons, or view a total solar eclipse.
Build and terraform planets with 12 materials, including water, oxygen, & carbon dioxide
Stellar flares & volatile trails
Procedurally generated planets, stars, & galaxies
Pulsars
Light-warping black holes
Epic space lasers
Shape oceans & mountains on planet surfaces
Spin planets apart with centrifugal force
Original soundtrack by Macoubre
Support for 20+ languages
Share & explore simulations on Steam Workshop

Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Updates
Build ids and update times come straight from Steam's PICS — the same source SteamDB reads. Patch history grows as we record new builds.
Engagement
Hours played at review time, across 620 reviews with recorded playtime.
Reviews
Themes across 618 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
Já tinha jogado antes no computador de um amigo, amei o jogo e agora adquiri também! Super recomendo pra quem gosta de jogos do tipo.
夯
fun space game
Despite the fact that this game has been in early access for a really long while, it's a great game. I'm in the process of planning out a stellar network for a game in this, and the amount of customizability in addition to the realism of this makes this a cool game. At some point I ran into a glitch that kind of messed with my plans ("Pulled by others" and "Pull others" settings didn't persist between saves), the developer got back to that fairly quickly, and it was patched, so now I can continue with my star system design. I hope this game gets more updates in the future and comes out of early access, because oh boy I can only imagine the amount of ideas that can branch from a fully constructed game. If there's one thing I would like to suggest adding to this game that isn't mentioned on the roadmap it's to add an option to increase UI numeric precision, because sometimes I like working with more precision visible to allow finer tuning of things or seeing subtle changes in mass from various things. If you're into universe simulators, this is a great one to try out, as long as your PC can handle it. (also I have the idea that stars with negative luminosity are "anti-matter stars" so I decided to make a binary white dwarf system with that, where one is normal and the other is an exact copy but with negative luminosity. It's just a fun thing I wanted to mention)
Universe Sandbox é um jogo incrível! Como ele ainda está em acesso antecipado, ele não tem TAAANTA variedade de planetas e tals, mas eu recomendo muito comprar agora, pois, provavelmente vai ficar mais caro depois, mas, em si o jogo é ótimo, dá pra fazer uma porrada de coisa e é divertido. RECOMENDO DEMAIS!
this is so fun i genuinely have lke 150 hours and i barely go on steam i reccomend
peak game but doesnt go smootly if u have a potato as a pc
I like that it has different things but the only thing i dont like is there is an livable rocky planet but there arent continents just oceans -Kylian Dictator
It's fantastic
Puedes elegir la precisión de las operaciones y tienes cientos de herramientas para explorar. Puedes activar una vista realista (aunque puede cegarte). Utiliza formulas reales. Sin duda el mejor simulador del espacio. Recomiendo tener un buen CPU, ya que es el componente que se encarga de las operaciones matemáticas.
Related
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Trends
Modeled estimate over time, reconstructed from Steam's monthly review histogram.
Engagement
DAU/MAU are modeled from peak concurrent players (≈×8 and ×28) — Steam publishes no active-user counts, so treat these as rough estimates, not reported figures.
Audience
Audience
Games most often reviewed by the same players — an audience-affinity signal from our review sample, not full ownership data.
Languages: English, French, Italian, German, Spanish - Spain, Czech, Danish, Dutch, Finnish, Hungarian, Japanese, Korean +16 more
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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