Puyo Puyo! 15th Anniversary

Anyone interested in this DS game? It's a very fun puzzle game. (inb4 this is a tetris rip-off, even though if you look closely there are no concepts borrowed from Tetris at all, except maybe the fact that you match up four of a color).
pwning the AI is always fun with a ridiculous overkill chain. Managing to beat Japanese people is so much more fun and satisfying though. (Puyo Puyo is a well-established puzzle game in Japan. And since it's a puzzle game, they're obviously masters at it <_< )