Nice one, I love layer of competitiveness introduced by the leadearboard, though my reaction ain't the best so I only made to gaining 1600 points. Visuals are nice as well.
I perhaps would only like to have something like a 2nd chance, maybe by introducing concept of hp in a way, that will get you to survive when you running into a tile (instead of instant reset), but maybe current implementation adds an element of hardcore to the game :)