While not commonly known outside of physicists or otaku, a space/time anomaly surrounding the Japanese islands causes breasts not to follow Newton's Laws of Motion but to follow the Nippon Laws of Mammary Motion.
Yes, the only one of these games I've played. It's awesome.
The very second clip of the 10 year old girl getting her breasts intentionally jiggled made me very sad and that didn't go away for the rest of the video.
Come to think of it, the mermaid chick in there is really familiar. Does Magical drop go by another name? Puyo, maybe, or one of the bust-a-move ripoffs?
I recognized that character as well. It was either the mascot character for an old snes rom site I used back in the days before I discovered bit torrent, or at least showed up in the banner ads all the time.
On a slightly related note (the DS comment got me to thinking) I just realized that the current generation of Nintendo systems should be some kind of godsend for developers and enthusiasts of these games. With the Wiis motion sensing controller and the DS touch screen, the user interface of console breast jiggling games can finally stand on even ground with PC breast jiggling games.