Universe Sandbox 2

Create and explore with a physics sandbox simulator that puts the cosmos in your hands. Universe Sandbox 2 is built for experimentation, letting you manipulate gravity, temperature, planetary mass, and countless other parameters to see how the universe responds. Whether you're building intricate solar systems, orchestrating spectacular collisions between planets and stars, or tweaking conditions to observe how worlds evolve over time, the physics engine delivers realistic, scientifically grounded results that make every interaction feel consequential.

Watch the universe come alive with stunning 3D visuals and accurate physics simulations. See supernovae explode in brilliant detail, witness the raw power of gravity bending celestial bodies, and observe the cascading effects of cosmic collisions. The open-ended design means there are no rules—only your imagination and the laws of physics. Beginners may find the depth of customization ambitious at first, but that complexity is also what makes mastery so rewarding.

Join a thriving community of creators and enthusiasts. Through Steam Workshop integration, you can instantly share your custom simulations with other players or download their creations to experience fresh ideas. Giant Army continuously develops and refines the simulator with regular updates, ensuring new features, improvements, and discoveries keep pace with player ambition. Universe Sandbox 2 combines the precision of real physics with the freedom of unlimited creative play, making it the ultimate environment for anyone curious about how the cosmos works—or how it might work differently.