Sorry I didn't get around to reviewing this earlier, lots of crud going on lately. Anywho, the review.
Pros: VERY interesting take on tetris with an element of Jenga thrown in for good measure. Honestly I liked it quite a bit. Seems simple enough to jump into as well. Being able to switch out gifts being dropped was handy too.
Cons: With the gift switching, seemed a little too easy. Also was a LITTLE frustrating to get a super high tower only to have the whole thing go toppling over at the last moment.
Other: Probably could have thrown in some background details, setting, other songs, misc stuff like that to spice it up a little, but not so much to distract from the main game.
Overall, I liked it. Keep it up.