Create and destroy on a scale you’ve never imagined!
User reviews:
Mostly Positive (11 reviews) - 72% of the 11 user reviews in the last 30 days are positive.
Very Positive (2,591 reviews) - 81% of the 2,591 user reviews for this game are positive.
Release Date: Apr 29, 2011

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Buy Universe Sandbox



“This is where Universe Sandbox succeeds brilliantly: players experience godly power to create or destroy, while almost unavoidably learning something about the physical properties of our universe.”
87/100 – PC Gamer

“Using the vast range of variables and tools at your disposal you can create some enormously convoluted displays of physics, bending cosmic laws to your will...”
80% – bit-gamer

Universe Sandbox ² Now Avaliable

Universe Sandbox, originally released in 2008 and on Steam in 2011, is no longer in development. We encourage you to check out our long awated sequel, Universe Sandbox ², now on Steam Early Access!

About This Game

Create and destroy on a scale you've never imagined with the ultimate space simulator.

Harness the power to create black holes, collide galaxies, and manipulate gravity with just a few clicks. Inspired by the software astronomers use to unlock the mysteries of our universe, never before has astronomy been so interactive or so much fun.

Spawn a massive moon to tear apart Saturn’s rings or launch a rogue star to rip the planets from their orbits around our sun. After unleashing catastrophic destruction, create your own solar system and share it with friends.

Key Features

  • Interactive, real-time, n-body gravity simulator
  • Change any property of any object at any time
  • Real physics, real data, real units, real science
  • Compare the objects in any simulation with chart mode
  • Supports anaglyphic 3D glasses and 3D DLP televisions
  • Built in tutorials and step-by-step activities
  • Includes 70+ simulations both real and fantastical
  • Extensive editing and creation tools make it easy to build your own simulations

System Requirements

    • OS: Windows 7 / Vista / XP Service Pack 3
    • Processor: 1.5 GHz Processor
    • Memory: 1 GB RAM
    • Hard Disk Space: 250 MB
    • Video Card: DirectX 9 level graphics card
Customer reviews
Customer Review system updated Sept. 2016! Learn more
Mostly Positive (11 reviews)
Very Positive (2,591 reviews)
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1,957 reviews match the filters above ( Very Positive)
Most Helpful Reviews  In the past 30 days
2 of 2 people (100%) found this review helpful
5.9 hrs on record
Posted: September 10
I just have to say... while not a game - it still captured my imagination for many hours. I wish I had a better box to run this app on - but otherwise it's fantastic in every sense.
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1 of 1 people (100%) found this review helpful
1 person found this review funny
0.4 hrs on record
Posted: September 23
I like to generate 1000 earths and make them orbit 10 stars at once. After that I feel satisfied with life.
Was this review helpful? Yes No Funny
2 of 7 people (29%) found this review helpful
0.4 hrs on record
Posted: August 31
It's not bad, you can play it as much as u want in offline mode because then u can refund it if u wanna
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Most Helpful Reviews  Overall
672 of 727 people (92%) found this review helpful
464 people found this review funny
10,001.1 hrs on record
Posted: May 18, 2015
What can I say?

1 hour of gameplay to explore the universe and get 12 of 16 achievements.
10000 hours to get the final 4 achievements AND become extremely good at doing nothing, seeing only the endless nothingness that exists in space, endeavouring to explore strange new worlds but seeing nothing, going where no man has gone before ..... wait .... that has already been done. There is nothing to see in our universe ...... NOTHING.

11/10. Would do another 10000 hours to finally see something.
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369 of 398 people (93%) found this review helpful
52 people found this review funny
8,697.0 hrs on record
Posted: December 1, 2014
Explore the Universe and make "what -if" scenarios. Many hours of fun.
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368 of 400 people (92%) found this review helpful
16.0 hrs on record
Posted: November 26, 2013
When I say that I'd reccomend this game it's only to a small niche of people. Because I happen to fall in the niche I rather liked Universe Sandbox, though I can see where many people woud not. Universe Sandbox is pretty self explanatory in the title, its a astrophysics sandbox in which you can create and destroy solar systems, galaxys, or even galaxy clusters (if your computer is beefy enough) Many stats and attributes are tracked as you simulate the astral dance of heavenly bodies.

Things like density, spin, velocity, mass, and heat are all tracked and simulated to give you the most realistic expierience possible. Unfortunately, it doesnt get very realistic. My biggest gripe I would suppose is the physics. The game uses Eular math, or if you have a processing power Runge Kata. But eventually stable orbits will do someting completely random, sending a few planets and stars on random vectors straight out if your little "pitri dish". This doesnt bother me too much because it mostly only happens when it comes to simulating galaxies. On the solar system level it does quite well and it has enough options to accomodate nearly any computer's processing power. That is, if you can navigate the menus.

Theres lots of options and statistics for every celestial body and you can edit every fascet. the problem is, this creates a very confusing series of menus, with confusing abbreviations and volcabulary if you're not already familiar with scientific notation and units of measurement. If the menus were a bit more friendly I think it would open up this game to alot more people. The actual simulation field can be a bother to wrangle too. I found it sometimes likes to snap focus to nearly every other celestial body but the one I want to focus on. The "searchbar" at the top ended up being my best friend.

If youre like me, and you can wrangle the menus and put up with the sometimes sketchy simulation, it truely is a universe at your fingertips. This simulator will only take you as far as your imagination (or processor) will take you. Binary systems, rings around Earth -- have you ever wondered what it would look like if the earth had a ring then the moon crashed through it? The possiblities are more or less limitless, given your computer can handle the math. If youre into astronomy, physics or just enjoy space to any degree, this game is worth checking out.

Without an actual objectives or things to accomplish, this game falls short of actually being a game. It would be better described as an app. This one probably isnt right for the masses, but just right for the armchair astronomer in me.
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414 of 478 people (87%) found this review helpful
352 people found this review funny
3.4 hrs on record
Posted: October 30, 2014
Destroyed the earth with a sun sized teapot.

I also made the earth orbit around Gabe Newells head.

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256 of 284 people (90%) found this review helpful
6 people found this review funny
5.6 hrs on record
Posted: December 13, 2013
Because you've always wanted to shoot earth into the sun
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187 of 205 people (91%) found this review helpful
5.3 hrs on record
Posted: July 12, 2013
Universe Sandbox is exactly what its name implies: a place for you to play around with astronomical bodies and see how changing various things will effect the macro-universe. I think it is one of the most unique and awesome titles on Steam. It is well put together, the physics in the game accurately demonstrate real-life laws, and the recent update that puts you directly into a tutorial the first time you start the game really helps you figure out the, at first intimidating amount of, options that you can play around with.

Whether for work, play, or educational purposes, Universe Sandbox is an excellent title that I don't think any Steam account should lack. If you have *any* interest, even a minute amount, in astronomy, physics, or even if you ever wondered what would happen to Saturn's rings if Neptune flew too close, you need to have this game. It's very relaxing to play with, and the the engine is extremely deep - allowing you to truly let your imagination run wild.

The GUI is clean and efficient, and the pre-built simulations and environments are extremely well put together and fun to play with. Some examples include:

Our Solar System
Local Galaxies
Earth & Moon
Saturn & Moons

*Physics Playgrounds:*
Small Scale Gravity
Floating Moons
Galaxy Collision

Buy now, build your own galaxy or satellite system, and watch what happens as time passes and you introduce variables into the equation.

*Bonus:* You can smash an asteroid into Earth to see what would happen, awesome for those bad days at the office.
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243 of 281 people (86%) found this review helpful
172 people found this review funny
1.7 hrs on record
Posted: May 10, 2015
d4rk s0uls 3 is a gud gam3
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Recently Posted
7.5 hrs
Posted: September 25
Throw earth into the sun simultator
Helpful? Yes No Funny
6.6 hrs
Posted: September 24
very nice universe simulator, you can test your ideas and play as god for a while :)
Helpful? Yes No Funny
1.7 hrs
Posted: September 23
Hello humans of steam! I have played this game for 51 MINUTES straight! This is possibly the best game of all time! I've seen Jacksepticeye and Mariplier (Sorry if spelt wrong) I shall post other reviews for other people in the 'Imagine studios' me and my imaganary friends came up with! Including they're reletives and who I roleplay as on popjam! If you like Space or maths or just both! This game is for you! So have a look it is 6. something. I hope you like this review of 'Universe Sandbox' and have a look out for the reviews of the creators of 'Imagine studios' and reviews for other games! It won't be long till an Undertale review comes out I do have it but I have to be careful when I play it. So this review is live from IMAGINE STUDIOS and have a look at the game and maybe I might make a website of chatting/roleplay and you can buy stuff! Thanks for listening and reading! - IMAGINE STUDIOS DIRECTOR/FOUNDER
Helpful? Yes No Funny
106.6 hrs
Posted: September 19
This not really being a game but very educational, I have actually spent many hours doing all sorts of stuff on the title.
Great for kids that want to learn about the planets and stars or even adults such as myself.
Helpful? Yes No Funny
- dan -
31.4 hrs
Posted: September 18
Play god with a model solar system in Universe sandbox. A fairly accurate model of physics and stellar information makes this the an excellent resource for students and space nerds alike. Not much gameplay however and given the games "dynamic screensaver" leanings it's a shame they didn't add some kind of cinematic mode.
- accurate
- cool idea
- plenty of things to mess with
- not a game
- underutilized potential

Recommended for people who get excited thinking about orbits and stellar (planetary) bodies. 3/5
Helpful? Yes No Funny
2.0 hrs
Posted: September 17
Destroy and Create Epic WorldBreaking Events while slowly watch your GPU Temps Increase.
Helpful? Yes No Funny
1.4 hrs
Posted: September 17
The interface is clunky and not very intuitive.
Also kept crashing on exit.
Helpful? Yes No Funny
I'mOnline (vmccal1022)
0.6 hrs
Posted: September 17
Helpful? Yes No Funny
Amateur Guardian
3.6 hrs
Posted: September 15
Great game!
Helpful? Yes No Funny