I got 582 yeeah I'm not good lol but i had fun, the one complaint I have with this game is as soon as i hit START BAM! i hit a rock and died, might want to add some space so the player can get a feel of the game first.
Are you sure you didn't accidentally move the mouse behind the left side of the screen? Because that is an insta-loss.
that might of been what happened to me. In that case, your good!