Original and Fun
Wow, great idea for a game. I've never seen anything like it. I like physics games when they are done right. For the most part I loved it, but...
A couple things.
The explostion sound is jarring and annoying. It doesn't fit the rest of the game sounds.
The main menu is awesome and very well done, however the after game menu should be reduced to something more simple. You have to do many retrys on some levels and having to wait for the fade out and menu animation to retry again is annoying. The fading the game in and out after every death is annoying as well. I'd do a quick pop-up on the menu and also wait a second or two after you "die" before showing the menu so you can see the results of the explosion. It is too much of an annoying shock to have the menu start to go through it's slow fade and animation before you even saw what happened. With that, have the option to click and bring up the menu right away, but wait a sec or two before showing, and don't fade out the game or fade in.
Fix that and I'd give it a perfect 10. It's original AND fun, something of a rarity...