Universe Sandbox is a physics simulator where you manipulate celestial bodies and watch gravity do its thing in real time. You can smash planets together, adjust star masses, tweak orbital velocities, or crank up surface temperatures to see what breaks. The simulation accounts for gravity, climate systems, collisions, and material properties—so if you superheat Earth's atmosphere or nudge an asteroid into its path, the consequences play out according to actual physics models. It's not a game with objectives or progression. You get a sandbox of space objects and the tools to experiment. Want to see what happens if Jupiter were twice as massive? Go ahead. The software includes VR support for headsets like HTC Vive and Oculus Rift. Best suited for anyone curious about astrophysics or who enjoys tinkering with systems to see how they fail.
