This game has been Greenlit by the Community!

The community has shown their interest in this game. Valve has reached out to this developer to start moving things toward release on Steam.

Greenlight is being retired. For more information on how to submit games to steam, refer to this blog post.
Gravity Simulator
Genre: Simulation
Platforms: PC, Mac, Linux
Languages: English
Players: Single-player
Dec 8, 2016 @ 9:51am
Dec 28, 2016 @ 4:42pm
Release date: Early 2017
Fling Planets and Change Physics

Gravity Simulator lets you control one of the most basic forces in the universe. Launch stars and planets, and watch as gravitational patterns unfold. Peaceful conic sections, dancing spirals, wonderful spirographs, and plenty of utter chaos will appear before your eyes.

But your powers don't stop there - you can also change the underlying physics of the simulation. Maybe, instead of a 1/r^2 force law for gravity, you'd like to see what happens if there were a 1/r^2.1 force law. Or a tan(r) force law. Or any strange force law you can come up with. You can even turn on General Relativity, and see what happens in a world where a massive object warps space. What weird and fascinating universes can you create by playing with the laws of physics?

If you like what you've created, it's easy to save it and share with friends. Show off a work of art, an interesting physics phenomenon you discovered, or, ideally, both at the same time.

  • Accurate physics engine (what you see is what you'd get)
  • Easy-to-share codes let you show off your creations
  • Test out arbitrary force laws
  • General Relativity (black holes with Schwarzschild metric)
  • Change colors, masses, lines, density, etc
  • Customizable planet images, with built-in mod support to add your own
  • Achieve inner peace

Play Now
You can explore this simulation - either in the free online version[]
or by downloading the full version[].

I'm excited to bring the simulation to Steam to see what you all can create!
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Nathan3518 Sep 25, 2019 @ 5:08pm 
Is it still coming to Steam at some point?
evanalee Feb 28, 2017 @ 3:59pm 

Foxy the Pirate Jan 15, 2017 @ 2:53pm 
oXijeX Dec 20, 2016 @ 2:13am 
Shwin Li Dec 11, 2016 @ 8:10pm 
Sounds like a good idea
Andy  [author] Dec 11, 2016 @ 7:19pm 
@DuckGamer25, @glenn_001au, @КОРОЛЁК: Thanks!

@WiiRSmrt: $5.99

@poofoo5: I know, I love universe sandbox. I like to think I'm aiming for a different target with this sim (roughly: less exploring astronomy, more exploring physics). But yeah, thumbs up to their sim.

@Moisha: It is indeed more sandbox, and not really game. I had toyed with adding some game-like structure over it, but found it distracted from the real fun, which was seeing what cool stuff you could make.
Thor Dec 11, 2016 @ 6:31pm 
This looks really good! Keep doing what your doing becuase your doing somthing right!:steamhappy:
WiiRSmrt Dec 10, 2016 @ 3:50pm 
how much would it cost?
glenn_001au Dec 9, 2016 @ 6:39pm 
Science games / sandbox tools / toys ... are a good thing. Voted for.
poofoo5 Dec 9, 2016 @ 11:01am 
We have a majorly improved concept of this game known simply as universe sandbox, your version is just a slighly easier to use layout. The game is very genaric so adding things like ships or planet explosions and what-not can possibly make this game worth while.