Loved the way that each symbol had a different set of physics applied to it!
My only two comments would be that the sphere would get a little bit lost while following the road, so a tiny outline would have done wonders; as well as having some sort of pointer to where you're meant to go after getting each symbol.
Other than that, it's probably one of my favorite submissions so far!
(edit: it's a shame the browser version doesn't work, hope you get it working soon!)