Good idea, but the game could have been better
Indeed a very simple and very addictive game (my highscore was 719, I think that's pretty high). I voted pretty low on it, cause in my opinion it was a bit too simple. The idea of this game was pretty good, but that is actually the only good thing about it. If you put a little bit more work in it, it could have had a score of 3.50 or even higher. Here are a couple of ideas and suggestions:
First, you should add some sounds for this. Some backgroundmusic would do this game good as well. Second, you should change the background. The black is pretty boring. I think you should change the background to something with a lab or something else that has to do anything with science. That's just my opinion, it's up to you to decide. Third, the blue things could be changed to atoms or bombs or something like that. Fourth, maybe you should add some more types of those blue thingies. You could add a couple of red ones that make a bigger explosion and green ones that make an explosion in four directions etc. This would make the game even more fun.
Like I said, I voted pretty low on this. 1 out of 5, 3 out of 10. Well even though I didn't voted high, I still think you've done a pretty good job here. Especially since the filesize is only 4Kb and it passed judgement with a score of 2.90. I've never seen anything with such a low filesize and such a high score before. Anyway, I hope you'll think about some of my ideas and resubmit or update it someday.
~Auz