Universe Sandbox is a physics-based space simulator that allows you to create, destroy, and interact on an unimaginable scale. It merges real-time gravity, climate, collision, and material interactions to reveal the beauty of our universe and the fragility of our planet. We support 20+ languages, including English, French, Filipino Italian, German, Spanish, Czech, Danish, Dutch, Finnish, Hungarian, Indonesian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Swedish, Thai, Turkish, Simplified Chinese, Traditional Chinese, Bulgarian, Greek, Romanian, Ukrainian, & Vietnamese.

Simulate Gravity - 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 that leave behind molten craters Create Your Own Systems - Start with a star, then add a planet. Spruce it up with moons, rings, comets, or even a black hole. 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 Supernova a Star - Make a star evolve by cranking up its age or mass, then watch a supernova unfold Explore Historical Events - Ride along with the Juno and New Horizons spacecraft, or view a total solar eclipse Material System - build planets out of Hydrogen, Iron, Rock, & Water Stellar flares & volatile trails Procedurally generated planets, stars, & galaxies Pulsars Light-warping black holes Original soundtrack by Macoubre