I liked ! Physics and cool. Good work for screen title game menu.
The sound icon does not keep the appearance deactivated and can become louder if you hover the mouse over the text and then click again.
By the way, about the font of the text. Certain letters ready to confusion and I saw macine instead of machine? Unless there was an forget of this letter...
I was able to cross a platform by falling quite quickly.
Also have in the penultimate as well as in the last a kind of block or invisible wall. And in the end, I wish I could still move. I do not know why. But I wanted it to continue. =P Anyway, I appreciate the change of atmosphere for the last level. I would have liked to see more of this kind and more colors property cubes and puzzle mechanics !