public alpha now available


Buy Universe Sandbox ²

Windows, Mac, Linux

Universe Sandbox ² is the latest and best version.

In development since 2011, it blows away the original version with improved physics, climate simulation, material properties, terraforming, and awesome collisions.


OS Logos

For Windows, Mac, and Linux.


Requires Steam.


For full system requirements and other information, see the FAQ.

What does "Earliest Access" mean?

Universe Sandbox ² is still in early development. We're not done fixing many of the issues and improving it as we get it ready for Early Access here on Steam. Buying-in early means you won’t have to wait to explore the many new and exciting features that are already in place, but know that you will encounter bugs, crashes, performance issues, and incomplete features.




















Universe Sandbox: original



The original Universe Sandbox, originally released in 2008, is no longer in development, but is still available for purchase.


Check the latest conversion rates



Universe Sandbox: original
Alternative Buying Options

Purchase through Amazon or Steam.


Educational Pricing

Universe Sandbox: original is free for schools anywhere in the world.

Learn more.


Educational pricing not yet determined for Universe Sandbox ².


Commercial Use

Commercial organizations must obtain a commercial license to use Universe Sandbox or distribute created media. Please contact sales for more information.



More Buy & Licensing Info in the FAQ




Universe Sandbox: Original



    no cost $9.95 USD
View Explore & view simulations Yes Yes
Time Control time Yes Yes
Chart Compare celestial bodies in chart mode limited


Add Add stars, planets, moons, & galaxies   Yes
Orbit Create your own simulation  


Rings Spawn rings around planets   Yes
Manipulate the force of gravity   Yes
Motion Easily create elliptical & binary orbits   Yes
Hand Move & rotate objects   Yes
Mass Edit object mass and other properties   Yes
Color Switch between multiple color modes   Yes
Center Change the center of motion   Yes
Diameter Show Lagrange points & habitable zones   Yes
Explode Explode anything!   Yes
3D Glasses Use 3D glasses for total immersion   Yes