
Universe Sandbox
Price History
Past 36 months · Updated dailyPrices cover Steam and 39 authorized stores; only legitimate offers are counted. The chart shows weekly market-wide lows and Steam's official price across the past 36 months.
01About Universe Sandbox
Universe Sandbox is a physics-based space simulator for experimenting with gravity, climate, collisions, and materials. Build systems around stars and planets, add moons, rings, or comets, then watch how your changes affect them. Steam players rate the game 96%% positive across 28,047 reviews. Interface languages include English, German, Simplified Chinese, and Traditional Chinese.
Credits
Lowest recorded in 36 months
$14.612026-07-30 · KinguinBase game · same records as the chart above; USD history, not a regional Steam low.Language support
| Language | Interface | Subtitles | Audio |
|---|---|---|---|
| Simplified Chinese | Yes | — | — |
| Traditional Chinese | Yes | — | — |
| English | Yes | — | — |
Show 23 more languages
| Language | Interface | Subtitles | Audio |
|---|---|---|---|
| French | Yes | — | — |
| Italian | Yes | — | — |
| German | Yes | — | — |
| Spanish | Yes | — | — |
| Czech | Yes | — | — |
| Danish | Yes | — | — |
| Dutch | Yes | — | — |
| Finnish | Yes | — | — |
| Hungarian | Yes | — | — |
| Japanese | Yes | — | — |
| Korean | Yes | — | — |
| Norwegian | Yes | — | — |
| Polish | Yes | — | — |
| Portuguese | Yes | — | — |
| Russian | Yes | — | — |
| Swedish | Yes | — | — |
| Thai | Yes | — | — |
| Turkish | Yes | — | — |
| Bulgarian | Yes | — | — |
| Greek | Yes | — | — |
| Romanian | Yes | — | — |
| Ukrainian | Yes | — | — |
| Vietnamese | Yes | — | — |
Steam PC edition data · 2026-10-16
02Before you buy
Simulations and Workshop
The Steam PC game lets you create and alter planetary systems; simulations can be shared and explored through Steam Workshop.
Languages
The Steam PC version supports many interface languages, including English, German, Simplified Chinese, and Traditional Chinese.
03Frequently asked questions
Can I play solo?
Yes. The Steam PC version supports single-player.
What does the game simulate?
It combines gravity, climate, collisions, and material interactions in its simulations.
Can I modify planets?
You can build and terraform planets using 12 materials, including water, oxygen, and carbon dioxide.
“Physics-driven celestial sandbox utilizes custom parameters and real-time orbital mechanics to fuel endless destructive experimentation.”
Our Verdict
Whether Universe Sandbox is worth your time depends entirely on what you expect to carry away from the word sandbox. If you want missions, growth, narrative momentum, and clearly marked goals, it cannot provide them. If you want an open-ended physics playground that still manages to be approachable, it has a genuine flavor all its own. Its most beguiling quality is the way it compresses the staggering complexity of cosmic motion into one small, irresistible impulse: let me just change this one number and see. That impulse is real, and it is dangerously easy to get hooked on.
The Real Costs
But the drawbacks are not trivial blemishes either, and it would be dishonest to wave them away. There is no narrative support, no traditional structure to catch you when curiosity flags, the audio presence is limited, and the visual value derives more from clean visualization than from artistic expression. All of that adds up to an audience that was never going to be large. This is not a game everyone can swallow on first taste. It is more like a sharp, pungent cheese: the people who like it eat more and more and fall deeper in, while the people who do not take one whiff and walk away. The 96 percent positive rating across roughly 26,876 reviews tells you that the people who stayed truly stayed, but a rating like that also quietly filters for a particular kind of player who already wanted what this offers. A self-selecting crowd will always rate generously, so I read that number less as proof of universal quality and more as confirmation that the right player adores it. The flip side is that the people who bounced off rarely leave a review at all, which means the glowing figure tells only one half of a genuinely two-sided story.
Five Years On
There is also the matter of time. The game has now been available for more than five years, and looking back from today, that context discounts some of the novelty that a high-freedom simulator once carried. In its earlier days this sort of thing dazzled more easily. Players have since seen far more sandboxes and simulators, so while the uniqueness of Universe Sandbox is still intact, the sense of astonishment is not as sharp as it once was. That is not a knock on the craft so much as an acknowledgment that the landscape moved. When it first arrived, simply letting a player collide two planets in real, trustworthy physics felt close to magic, and that first jolt of wonder did a lot of heavy lifting. The simulation underneath is no less impressive now, but expectations have climbed, and a feature that once stopped people in their tracks is now something a seasoned sandbox player half expects. The substance endures; the surprise has mellowed. Anyone coming to it fresh today should weigh that, because the game asks to be judged on its depth rather than its shock value.
The Verdict
Going by the actual experience as it stands now, I would file it under worth a try, but do not expect too much. Anyone prepared to spend a dozen or more hours genuinely investigating will very likely walk away rewarded. Anyone who only wants a game to catch them and carry them along will probably feel done in about two hours. The honest recommendation, then, is a conditional one, and that is no cop-out, it is simply the truth of what this game is. If the phrase real-physics laboratory you can break and rebuild at will makes you lean forward, buy it without hesitation, because nothing else delivers that quite so cleanly. If it leaves you cold, no review can manufacture the curiosity the game depends on, and you are better served elsewhere. In a single line: it is a cosmic toy built for the deeply curious, and it asks you to bring the curiosity yourself. Match it to the right player and it is close to irreplaceable; hand it to the wrong one and it is an empty room with very good physics.
Popular Steam reviews
Native-language selection · 10 reviewsSelected helpful reviews in this language show both recommendations and criticisms. This selection does not represent the overall positive rating; opinions reflect the version reviewed.
I really wanted to enjoy this simulation. But it's severely lacking as is. Here are my gripes: #1- Each simulation type is independent of the other. I was expecting all worlds to have environmental simulations enabled, but they don't. Only specially designed prefabs (earth and mars I think are only ones?) have the environmental simulation enabled. There are other simulation setups, but they seem too pigeonholed to really allow for true sandbox tinkering. #2- It seems like the only interesting things I do are collisions and design some cool orbits I guess. The level of simulation detail in other areas is far too little to make it fun to me. #3- Why doesn't the matter projectile thingy add to a planet's makeup and mass? Atmosphere mechanics are awful. I was expecting to be able to add gasses or water to a planet and have it establish an atmosphere, or maybe it wasn't big enough to hold an atmosphere? All cloud cover looks the same as earths, there is no attempt to model a planets atmosphere, and there is absolutely no detail paid to the amazing amount of atmospheric complexity of gas giants. (these two below are minor gripes) #4- The simulation including all moons (or even our own moon) is a bit hidden, and I can't find a pre-built simulation including all the defined solar system objects. #5- Can't you come up with some way to model multiple star systems realistically? Would be cool if I can hurl one star system at another and see the results Maybe pause and group multiple stable(ish) objects together as one mass data point at very far zoom distances so that you can actually build a few systems. #6- The interface needs lots of work. If I have hundreds of objects on screen, why not (by default) just display the most important trails and orbits at extreme zooms? Like if I'm looking at the solar system, only the major planets should be shown at max zoom, as I zoom in more, show me smaller and smaller objects or something? Things get extremely cluttered. Also, the pause on impact needs a threshold or something and maybe detect an impact a few minutes before it happens so that I can watch or intervene on the things I'm actually interested in. If you like to watch planets collide for hours with predictable identical results every time, you might get enjoyment out of this. The only reason I personally didn't ask for return from the dev is that it's a very cool project and I'm hoping I can come back to it in another couple years and it is more the fully featured simulation I was hoping for originally. Also, the devs care deeply for this game which is great news!Show moreShow less
you can destroy France with meteor EDIT: you can now also flood France EDIT 2: I just found out that you can now also destroy France with deadly laserShow moreShow less
Meh. Expected more. Especially for the price. Fine, but got boring pretty quick. Maybe I'm not creative enough to appreciate it, but I just didn't like it very muchShow moreShow less
I wanted Pluto to be a planet again so I made him bigger but then he got too big and collapsed into a supermassive black hole that swallowed the entire solar system. Poor Pluto.Show moreShow less
Honestly, I bought this game years ago, I think in 2017, and I loved it. It was a cool game to mess around with. However I've come back to it recently and noticed it's STILL in "early access" 6 years after it was released. Instead of the game improving, it's gotten worse. There are HEAPS of game breaking bugs. For example, launching an asteroid at the earth has literally no effect on the planet. Ocean levels remain the same, lights stay on at night, no fire, nothing. Doesn't even increase the temperature!! Launching the moon at the earth creates a large patch of orange and that's it. The game is extremely inaccurate because I doesn't even simulate anything. Super boring and unless they fix this issue, it isn't worth wasting your money. Note that previous versions were more fun because launching something at a planet would actually cause effect. It really sucks that the game is still in early access. Maybe wait another 6 years before it's actually fully released and hopefully then it won't be a crap game. No where NEAR worth $42.95 AUD for a DODGY incomplete game!!Show moreShow less
This game helped me to understand why I am not god.Show moreShow less
Honestly, I'm kinda disappointed. Basically, it's selling point is that it's a simulator. Yet its ability to accurately simulate things isn't that great. Some examples, trying to orbit a binary star, can produce some very odd results. Habitable zones don't seem to be calculated very well. Most planets have no climate simulation. Temperature calculations seem odd. Brown dwarves don't appear to emit heat. These are some of the problems I've run into after just a few hours of experimenting. On the plus side, it's a good looking sim.Show moreShow less
This is a simulator, not really a game. If you have a problem with that then please go watch some videos about this before buying it and then downvoting it. With that being said, this is a gem worth owning, and I proudly bought it directly from the developer before it was even available on early access. ----- edit: So many angry people in the comments; sorry you guys can't have a beer with the developer like me. Keep the flame on high! I have some popcorn kernals around here somewhere! XD By the way for those who got lost in my epic review, I don't personally know the developer...Show moreShow less
This game is nothing like it used to be. There used to be organics, CO2, when you melted planets they would change appearance, decaying orbits, ice on asteroids above absolute zero in temp, and there is so much more that I can't remember right now. They keep messing with things, not improving them, making them completely useless or just removing them out right entirely. From what I can tell they do it because "it's not good enough we gotta work on it" but for pity's sake they are fun just leave them in. The only thing this game can do anymore is orbital mechanics and smashing specifically large rocky planets together. You cannot simulate solar system forming, you cannot simulate planet forming, you cannot simulate terraforming, just forget making things out of smaller parts like in real life. You either have to use your god powers like the particle stream to add things or specifically tune it in the UI then just watch them, what fun is that? Don't think you can do cool stuff like smashing Earth with another planet and making a second moon that's not how the fragmentation and orbital mechanics work some fragments just spray out everywhere and some smash back in. They should remove those features and work on them indefinitely as well :/. I keep playing it trying to find some avenue that may be feasible but every time I try to do anything remotely interesting it doesn't work out at all how I planned it or how it should have worked. In the discussions I see several questions about features gone and it's all from people like myself who got this game in it's earlier states, all met with responses of equivalent anguish or someone/sometimes a dev telling them it's gone because like I said "we gotta work on it" I wish this game was still fun or as interesting as it used to be but it simply isn't. If you buy this game you will play it for less than 10 hours I am almost certain of it, there is simply not enough to do. Once you do that cool thing from that youtube video you're done. Do not buy this game in its current state. TL:DR Devs ruined this game in the cause of improving itShow moreShow less
Source: original Steam user reviews. Helpful votes are an archived snapshot, not live data. Last collected: 08/15/2026.