This is the site of zotion. Zotion is a group of three people. We make games, cool animations like these and one of us makes cool drawings in the computer. Here you can see the technique that we use to make the animations on this site.
Here you can see that this technique is not very cool with just two balls but if we multiplie the number of balls this animation would look much better.
It is also interesting that if we have an odd number the animation is much cooler.
If we have for example nine balls the animation looks pretty dope.