Create & destroy on an unimaginable scale... with a space simulator that merges real-time gravity, climate, collision, and material interactions to reveal the beauty of our universe and the fragility of our planet. Includes VR support for HTC Vive and Oculus Rift+Touch.
Recent Reviews:
Very Positive (76) - 89% of the 76 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (4,431) - 93% of the 4,431 user reviews for this game are positive.
Release Date:
Aug 24, 2015
Developer:
Publisher:

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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“Universe Sandbox ² is in active development, but it's already a fully-featured, stable, and smooth-running space simulator. And it now officially supports VR with an HTC Vive or Oculus Rift+Touch.

We're proud of what we have to show, and we know many fans are eager to explore and experiment with the universe.

We're constantly working on features, improvements, and bug fixes, and we release frequent updates.”

Approximately how long will this game be in Early Access?

“It's hard to give an accurate estimate. Building a universe simulator is a job that's never complete.

We have a long list of features and improvements that we're very excited about implementing, and which will keep us busy for a long time to come.”

How is the full version planned to differ from the Early Access version?

“Some of the features and improvements we'd like to add:
  • Space megastructures
  • Basic life simulation
  • More dynamic terraforming & improved climate simulation
  • Better collisions on a wider range of scales
  • Missions and objectives
  • Steam Workshop support
  • Achievements
  • Language localization
  • Improved human scale mode
  • More intuitive VR experience with features equal to desktop version

What is the current state of the Early Access version?

“Universe Sandbox ² has been in development for almost five years, and for the past two years, we've had users pouring hours into testing, exploring, and enjoying the sandbox. It is already a fully-featured, stable, and smooth-running simulator.

We've fixed most of the serious issues and have made a lot of progress on optimizations for a range of hardware. Because it is a large-scale sandbox, though, it does have its share of bugs and could use polish in some areas.

The VR version of Universe Sandbox ² is a more recent update, and we are working on adding more features and functionality to match the amount of control and fine-tuning that is possible in the desktop version.”

Will the game be priced differently during and after Early Access?

“The price will probably increase in the future.”

How are you planning on involving the Community in your development process?

“We actively seek community feedback from the in-game feedback as well as from our forums and social media.

Community feedback helps us prioritize our long list of planned features and focus on fixing the worst bugs and issues. We make an effort to address every issue that comes our way.

We also add simulations and features based on community requests, like the recent addition of custom-colored planets, and an index for the likelihood of life on planets. We also recently added a tool for easily recording and sharing GIFs on social media.

We are actively working on Steam Workshop support, which will open up doors to community-created simulations. Further down the line, we plan to also support sharing of custom models and textures.”
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Recent updates View all (50)

June 18

Help Us Test Translations & Steam Workshop



We’re getting closer to releasing two new, big features:
  • Localization (Translations)
  • Steam Workshop (Sharing Simulations)
Now we need your help testing both of these! Jump into the Community Test build and start changing languages, translating, and sharing simulations.

Localization


Change language:
Home > Settings > General > Selected Language

Translate:
Home > Help Translate

Universe Sandbox currently supports a number of more widely-used languages that have been translated via Google Translate. We'd love your help with translating Universe Sandbox into any languages you speak! Learn more about how you can help translate Universe Sandbox.

Steam Workshop


Share simulations to Steam Workshop:
Home > Save > Share to Steam Workshop

Browse & open Steam Workshop simulations:
Home > Workshop

Sharing simulations now will help us test this feature and also help us build up a big catalog of sims on Steam Workshop, so we can show off the creativity of the Universe Sandbox community from day one of the official Workshop release.

As part of our redesigned save dialog and support for Steam Workshop, simulations now support custom descriptions that appear when the simulation loads. And even cooler? These descriptions support the same BBCode formatting that Steam does. Two differences: It also supports images with [img] URL [/img ], and even animated GIFs! But it does not support the noparse tags.

Opt Into the Community Test Build
  • Right-click on the game title in your Steam Library
  • Click on ‘Properties’
  • Select the ‘Betas’ tab
  • Set the dropdown menu to 'community-test'
  • Close the Properties window
  • Steam will now update Universe Sandbox ² to the Community Test build
  • Once updated, launch Universe Sandbox ²
Please note: We’ve done extensive testing on both of these features, but this is a Community Test build for a reason. There are still changes we have planned, and you may encounter bugs. If you do, please let us know on our forum or in-game via Home > Send Feedback.

Thanks for testing and for your patience!

June 20: Update 21 ct4 adds the latest translation contributions from the community. Thanks to everyone who has helped. Keep the translations coming! The updated build also includes support for Workshop in VR plus a handful of improvements and fixes to translation tools and the new save dialog.

See What's New | Community Tests for a list of changes
20 comments Read more

May 24

This Hyperbolic Update Will Change Your Life | Update 20.7



This update features improvements to orbits & motion:
  • Improved Support for Hyperbolic Trajectories
  • More Precise Control of Orbital Elements
  • Reorganized Motion Tab in Properties Panel
A hyperbolic trajectory is the path of an object that is affected by the gravity of a parent object, but not enough to be pulled into an orbit. Instead, it escapes the gravitational influence and continues toward infinity.  

Learn more about hyperbolic trajectories:
  • Home > Open > An Interstellar Object with a Hyperbolic Trajectory
There is also a new sim of Jupiter’s co-orbital retrograde asteroid 2015 BZ509:
  • Home > Open > Historical > Retrograde Asteroid 2015 BZ509
Update 20.7 also has many smaller improvements, including autosaves and a revamped What’s New panel, along with a bunch of bug fixes.

Check out the full list of What’s New in Update 20.7

May 31: Update 20.7.2 is a small update with a few bug fixes, including fixes for issues with tutorials and the TRAPPIST-1 simulations.
22 comments Read more
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Report bugs and leave feedback for this game on the discussion boards

About This Game

Universe Sandbox ² is a 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.

Universe Sandbox ² includes the desktop version and a VR mode with support for the HTC Vive & Oculus Rift+Touch.

Simulate Gravity

N-body simulation at almost any speed using Newtonian mechanics. Real science, real physics, no supercomputer required.

Collide Planets & Stars

Epic, mind blowing collisions of massive planetary bodies that leave behind molten craters.

Create Solar Systems

Start with a star, then add a planet. Spruce it up with moons, rings, comets, or even a black hole.

Model Earth's Climate

Watch sea ice grow and recede with the seasons because of the tilt of the Earth: change the tilt and change the seasons. Or move the Earth farther from the Sun and freeze the entire planet.
Learn more...

Supernova a Star

Make a star evolve by cranking up its age or mass, then watch a supernova unfold.

Explore Historical Events

Ride along with the Juno and New Horizons spacecraft, or view a total solar eclipse.

Throw Planets in VR

Just grab and fling.

And more...

  • Material System - build planets out of Hydrogen, Iron, Rock, & Water
  • Solar flares & volatile trails
  • Procedurally generated stars & planets
  • Pulsars
  • Light-warping black holes
  • Dark matter

System Requirements

Windows
Mac OS X
SteamOS + Linux
    Minimum:
    • OS: Windows Vista SP1+
    • Processor: 1.6GHz dual-core
    • Memory: 1 GB RAM
    • Graphics: 512 MB Video Memory, Shader Model 4.0
    • DirectX: Version 10
    • Storage: 2 GB available space
    Recommended:
    • Processor: 2.6GHz quad-core
    • Memory: 4 GB RAM
    • Graphics: 1 GB Video Memory
    • DirectX: Version 10
    • Additional Notes: For VR, see recommendations from Vive or Oculus
    Minimum:
    • OS: OS X 10.9+
    • Processor: 1.6GHz dual core
    • Memory: 1 GB RAM
    • Graphics: OpenGL, 512 MB Video Memory
    • Storage: 1 GB available space
    Minimum:
    • OS: Ubuntu 12.04+, SteamOS+
    • Processor: 1.6GHz dual core
    • Memory: 1 GB RAM
    • Graphics: OpenGL, 512 MB Video Memory
    • Storage: 1 GB available space
    • Additional Notes: Officially supports the same Linux distributions supported by Unity (currently Ubuntu 12.04+). Other distributions can and will work, but they may require a bit of configuration and tinkering.
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