Needs improvement:
* You don't always respawn when falling off
* The game starts very fast paced - if you didn't read the instructions you loose right away
* Might be a Unity WebGL problem, but the game doesn't load for me 3 out of 4 times
* There's a spelling error on the Game Over screen
* The speed up / speed down is jumpy, doesn't react everytime the buttons are pressed
* A way to keep track of your previous distance would be neat
Good:
I see you got the distance counter and the repeating platforms right