Did you look at the videos, or just the static pictures? The static pictures are just screenshots taken halfway through the videos.
You can see my videos at: http://www.youtube.com/watch?v=S1ZPSbImvFE http://www.youtube.com/watch?v=-_VFZ_ON0A8 http://www.youtube.com/watch?v=VbyQomrJSeU
Due to time constraints (I underestimated the time it would take to write a fast bitmap/polygon library) I only let those simulations run for ~1 hr each.