Physics Sandbox v2.3 A real-time 3D physics sandbox built entirely in Scratch. Fling things. Build things. Break things. Runs at 60 FPS on Turbowarp, 30 FPS on Scratch (both are the platform cap). 5,000+ blocks. No cloud. Just physics. Loads in 3 seconds Inspired by Algodoo. If this made you think 'I could make a physics engine too,' even a 2D one go for it.
not original, this is just a better one tho