What is Universe Sandbox ² ?
It merges gravity, climate, collision, and material interactions to reveal the beauty of our universe and the fragility of our planet.
Create, destroy, and interact on a scale you've never before imagined.
For Windows, Mac, and Linux.
Universe Sandbox ² is a Steam Early Access game still in active development. It is not yet finished. Access to the alpha is provided via Steam code. For code redemption, a free Steam account is required.
What can you do with Universe Sandbox ² ?
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.
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.
Add carbon dioxide to a planet's atmosphere to heat it up. Then add water...
Impact planets with asteroids and comets and leave behind massive, molten craters.
Supernova a Star
Make a star evolve by cranking up its age or mass, then watch a supernova unfold.
- Material System - build planets out of Hydrogen, Iron, Rock, & Water
- Solar flares & volatile trails
- Procedurally generated
stars and planets
- Light-warping black holes
- Dark matter
Universe Sandbox ² Gameplay Video
Demonstration of Universe Sandbox ² Alpha 7
More videos from Chad, technical artist & developer for Universe Sandbox ²
Collision Tests in Universe Sandbox ² Alpha 7
More videos from Thomas, numerical physicist & developer for Universe Sandbox ²
What Are People Saying About It?
Thank you guys so much for creating this. Astrophysics is a passion of mine, and it makes me so happy to see that others have taken that love and created such a beautiful piece of work.
Who hasn't wanted to crash the Earth into the sun or bombard the moon until it's nothing but a pile of rubble?
I can honestly say that this is the coolest bit of software I've ever seen. The surface effects on the planets are amazing. The sun!
There is not a single title like this in terms of accuracy and quality.
...a vast improvement over the original. ... an incredibly enjoyable simulator.
...the greatest science games of all time. You guys are doing incredible work and creating things I've never seen done before... You're all making something special.
Most epic moment - increased the mass of the sun when it suddenly flashed insanely in a giant supernova. Epic touch.
This new release is simply amazing... Love the added features... Love it, Great Job!
I can sit at home and just play it for hours.
Love this program. So pretty. You guys really outdid yourselves!!
This is [a] fantastic tool in understanding the mechanics of the universe.
Absolutely perfect. A few performance tweaks and I'd be spending thousands to get it!
Just...wow. This game... sim... thing is ******* awesome.
A space simulator like no other: The Sims meets Elite meets Stephen Hawking's archives.
Having the moon impact the earth and seeing the polar caps melt due to the heat of the impact is absolutely awesome! I then grabbed just the earth, boiled the seas, froze it over, and then put it back to 12 degrees to see what would happen. It is fantastic to explore with!
This simulator really puts you in the driver's seat to the universe we live in.
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Who's Making It?
Project Lead & Creator
Developer & Code Architect
Developer & Shader Wizard
Numerical Physics Developer
Climate Scientist & Developer
Developer & Technical Artist
Astrophysicist & Developer
Operations & Support
Collectively we are Giant Army.
Standing on the shoulders of giants...