cool game
nifty idea, very challanging indeed. a little graphics uplift and adding some sound effects would make this entry great.
i look forward to other submissions from you and would be happy to create some customized music in the future. the current one you are using was a total experiment for me and doesn't loop too good :)
i can also create some custom sound effects if you have need of them. also actionscript assistance as i am primarily a programmer, not a composer ;)