I don't get why people get so ticked off about high difficulty level. It just increases the gameplay time! And this game has a nice, retro feel to it... defenitely VERY hard!
Look people, PLEASE read his description & updates! OBVIOUSLY it's a recreation of Geometry Wars, but now it's in flash version and it's free. They did the same thing with that battalion wars (or whatever it was called) that was a recreation of Advance Wars.
However, I have to say, this game wasn't very fun. Too hard to move around, controls were more difficult than Geometry Wars, and didn't have the same chaotic feel to it.