Geometry Wars 300 million?!?!?

I just downloaded this game...... man is it fun.  i just checked the leaderboards and couldn't believe some people have over 300 million points!  i have gotten 190k so far.... but 300 million?!?!?  the 100 mil w/o dying sounded impossible to me.... guess not.

i scored over 3 million...it's crazy.

but yeah, i've heard that at the higher levels it stops getting any harder after a while.  and at that point there are so many enemies that you get bonus lives/bombs pretty quickly.  that's basically the whole strategy of the game...win more lives than you lose = many points.