Nice game. Definitely needs a restart button. A few times I was still holding down the arrow key from the last level and just moved straight off the first platform in the next level forcing me to have to reload the whole page to retry.

That was fun, and I loved the music. Would be good to either make it possible to restart a level if you missed something, or move on to the next stage but not getting or losing some the points, as there was nothing to do if I fell off a platform and missed one of the goal things, except reload the page and lose my high score.