Makes you mad, but you won't let it go...
First of all, the graphics of the game are pretty good. The physics simulation in the game is awesome, which makes it all the more fun to play.
Sound in the game is good too. The main menu music is very simple and cute. The voices and sounds made by the birds are funny, sometimes irritating, but good nonetheless.
Like I said, you'll get frustrated when you can't solve a level, but will keep trying to solve it until you do.
Conclusion is that this game is a phenomenon, which I'm sure you already know by now.
So go ahead, download it and start playing. It's free for Android, unlike its iPhone counterpart.. :) Enjoy!!