Very Nice job
Nice minimalist style. I like the background graphics and the music. The flying blocks that can be destroyed is a nice touch.
The only suggestions I have are:
- if there's any way to capture the mouse when it leaves the screen, that would be great. If not, maybe pause the game if the mouse leaves the screen, or reaches the border. It's quite fustrating when the mouse eventually drifts off the playing screen and control is lost.
- when there are a lot of explosions, the game starts to slow on my 3Ghz PC. It might be worthwhile to disable the cosmetic graphics like the background and the schrapnel when there is a LOT of activity. Maybe there's some way to use a timer to tell if the game is slowing down.
Resolving those two above issues would make the game 100% professional. Great job! I'm really impressed!