I can see that you wanted to rip off geometry wars, but seriously? A) +1 bomb when you destroy black hole. There are advantages to letting them go off OR destroying them. B) Shit spawning on top of you? Bull. C)The triangles have an ABSURD ability to evade, moving at ridiculous speeds to bend around a shot. D) When a triangle cluster collides into you, it should die and not produce any triangles. They're insta-deaths, which is GAY. 2/5 for the attempt.
You have a good concept, and you went about what you wanted to do pretty well.
The only real problem, in my opinion, is the perspective. You may of been trying to avoid being a Guitar Hero or DDR rip-off by going with the right-to-left deal, but it's very awkward. Other than that, I might suggest making the window for key-presses a little less strict.
I liked it, though. Still a good job.
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