found this old-ish picture on my pc so i decided to upload it finally XD
screenshot of my little game project (or more like screensaver project).. it basicly has 4 balls those collide on each other at times and move kinda randomly, bunch of random-factors in the game so the balls wouldnt go simially on each time.. well, anyway, the balls just happened to perfectly like this, colliding on each other at same exact time XD on each start or end of the "line", you can see those little effect-balls, thats becos the balls collided on each other at those points too.. there is small time when they dont/cant collide on each other after doing so, so they managed to move towards each other more and then collide.. heh.. x3