What made Phun revolutionary was the "Scribble" tool. Unlike complex CAD software where you define vertices and constraints via menus, Phun let you simply drag your mouse to draw a circle or a polygon. The "auto-simplify" function would instantly convert your chicken-scratch drawing into a smooth, functional physical object.
Algodoo is a 2D physics simulation app where you can build scenes with shapes, joints, fluids, light, and sensors, then watch them interact under gravity, friction, air resistance, and collisions. It’s designed to be intuitive: draw objects, assign materials, connect parts with hinges or springs, and press play to see what happens. phun algodoo