Clicking on each panel will get you a larger version of that panel. Clicking on the numbers underneath each panel will get you the individual evolutions. The pictures are large: 14714 by 8508 pixels (~20 MB). Your browser will likely shrink each one to fit the browser window, so be sure to click/expand it to see all the glorious detail.
If you think of the downward-moving "lines" as particles, a lot of "physics" happens as the particles collide. How many different particles can you distinguish?