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.

Key features:

• 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