After seeing multiple satisfying looping animations on Instagram, I just had to give it a try. Also a good excuse to practice booleans, nurbs curves, camera movements and physics.
I managed this by running a rigid body sim on one ball that rolls down the track. I then converted the sim into keyframes and duplicated the ball ensuring each ball was equidistant. Above the camera and light are paired to an empty which moves down at a linear speed on a slight angle.
