Universe Sandbox ²

Universe Sandbox ² 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. Universe Sandbox ² is the long-awaited sequel to the original Universe Sandbox.

Universe Sandbox ² includes the desktop version and a VR mode with support for the HTC Vive & Oculus Rift+Touch. This is a free, automatic update.Simulate GravityN-body simulation at almost any speed using Newtonian mechanics. Real science, real physics, no supercomputer required.
Collide Planets & StarsEpic, mind blowing collisions of massive planetary bodies.
Model Earth's ClimateWatch sea ice grow and recede with the seasons because of the tilt of the Earth: change the tilt and change the seasons. Or move the Earth farther from the Sun and freeze the entire planet.
Learn more...
Terraform PlanetsAdd carbon dioxide to a planet's atmosphere to heat it up. Then add water...
Deform SurfacesImpact planets with asteroids and comets and leave behind massive, molten craters.
Supernova a StarMake a star evolve by cranking up its age or mass, then watch a supernova unfold.
And more...

• Material System - build planets out of Hydrogen, Iron, Rock, & Water
  
• Solar flares & volatile trails
  
• Procedurally generated stars & planets
  
• Pulsars
  
• Light-warping black holes
  
• Dark matter