Are you looking to add the z-axis to your simulations? Well I’ve tried thinking in 3D, but it still escapes me. Box2D is an open source physics engine written primarily for games. As the name suggests, Box2D is a purely 2D engine. However, Box2D has grown beyond it’s humble box simulating roots, and can now handle convex polygons and other shapes coming soon.”rn “rnVisit The Box2D Physics Engine Websitern