a simple formulae is often the best...
Graphics:
the graphics are simple, triangle firing circles at squares...due to the simpel shapes it's nice to see you havn't left it rugged and you've smoothed it all out. my game didn't lag once not even when i was playing stupidly on hard with the mega-boost which is good.
Style:
i'm a big fan of shooters, the game is pretty addictive but long due to lack of a pause button (which i'm suprised i havn't seen anyone mention). i liked the added touch of picking up stars afterwards before it finished, it left a sense of achievement.
Sound:
My 'rents are asleep right now and so i didn't have the speakers on, all fairness i'm not gonig to vote 0 for something it was my fault for not doing so i'll meet it halfway.
Violence:
not much violence due to the lack of gore that shapes tend to emit,but the shooting and dividing flowed well as i mentioned before.
Interactivity:
a well planned out menu which to my added suprise totalled all your scores (a nice touch), the game itself was all mous controlled which i found a nice twist over some shooters. my one problem was manouvering but that's due to my own dumb mouse :P
Humor:
i'm a bit crazy, laughing at division in rudimentary shapes i found awesome at some points. especialy picking off the tiny ones with a big circle, so that's cool.
Ovoerall:
i feel there's a good solid game here, it all flows well and it has some very nice quirks to it. it's one of the few games recently that's challenged me too (just like everyone else apparently), i think however the games in desperate need of a pause button/key for the longer modes. apart from the pausing i congratulate you on a good game, and now i must finish hard mode before sleeping....for 'tis midnight in the UK and i'm pretty tired.
Peace out.