No high score, not even a level counter.
http://mirror8.cgdc2.fizzlebot.com/?puzzleID=1Grow your tree, try and steer your branches through all the rings. Watch out for sparks - they are deadly. Seeds will drop and start an extra tree.
Anything you do affects all branches, except left and right, which grow one half (split at the very first fork).
I think the level I failed on is the last one (16). If you see one that looks like this, then you're as far as I got.