I received an early birthday present the other day, and I must say it was a good one. I got the game Meteos, and have been hooked to it ever since. The game is very easy to jump into, and can be played for those quick 10 minute bursts, or for hours on end. It's also one of those games that's very easy to learn (I pretty much got the concept about 2-3 seconds into the game), but can be difficult to perfect. There is quite a bit of strategy involved in where, how deep, and how many of the Meteos you want to launch off, so it's good to learn those strategies.
I highly recommend anyone with a DS get this game. It is a must have, and while I haven't played Kirby yet, I think it's safe to say that Meteos is one of the best, if not the best, DS game so far.