Slow gameplay

Sorry the game is far to slow and uninteresting.
I believe simple games can be extremely fun and interesting, it just needs to be a simple idea with a bit more added on the top (see below).
speed it up, make it fun, it's already decent, make it better.

think again please (and a little further)

I totaly agree with McGootch.
You have a very simple game. (simple != bad)
the controls are very easy to understand, so the game needs some interesting mechanics to prevent it from beeing boring.

some ideas:
- I did not really understand the point system either. please explain it in the game!
-why are there different colored blocks? no combos?
different blocks could have different features (exploding, or harder to kill, shooting... )
-different types of bombs: a green bomb can only kill green blocks...
- upgrading your ship. for right now this doesn't make any sense, but more complex your gameplay becomes, the better it will be to have this possibility.
-check out other tetris-like games to get some inspiration.

Not attention grabbing

Yes it does work, but it just seems way too slow to really grab my attention. Maybe add a little music, more variety, or at least change around the backgrounds a little. As mentioned before it is like a reverse Space Invaders, but Space Invaders was a bit faster paced and fun to follow.

it works...

but it doesn't really hold interest. no music, little sound effects, and over all slow pace of the game really detract from the over all idea. i assume the point of the game is to eliminate the blocks before you hit them, but no idea on the scoring system.

Decent lightweight game

At first I thought the mouse actually controlled the bomber but then I saw it was just clicking the mouse or pressing the spacebar, no movement required. Kinda reminds me of Space Invaders but with the twist that you're the invader.