Universe Sandbox
Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.
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News
11-Year Steam Launch Anniversary20 Aug 2026
The 11th anniversary of Universe Sandbox’s Early Access launch on Steam is Monday, August 24, 2026!To celebrate this milestone, Universe Sandbox is on sale now through August 31.This year, we’ve already released the first part of our multi-year physics architecture overhaul, and added winds sweeping gases across planet atmospheres, atmospheric drag to simulate meteors, a simulation of the Artemis ... Read more
Crashing Craters | Update 36.319 Aug 2026
Collision craters form and combine together more realistically. You can also duplicate objects, watch black holes evaporate, and explore a simulation of a newly discovered exosatellite. Creating CratersCraters from collisions with moons and small rock fragments alike are more realistic, blending naturally and better respecting an object’s elevation range and topography. Larger impacts now leave be... Read more
Winds of Change | Update 36.225 Jun 2026
Watch winds spread gases across planetary atmospheres, see the unique shape of any selected object with new stylized outlines, and adjust object compositions by percentage. We’ve also focused on eliminating issues with over 50 fixes and improvements. Atmospheric WindsGases now sweep across planetary atmospheres by the newly simulated geostrophic wind. Check it out and customize the wind speed unde... Read more