It's pretty fun, particularly when trying to cheat. Like on that one level with a bunch of reverse buttons, if you hit the corner just right, you can bounce right back to the initial fan on the first go and then finish the level in a second. I think it's cool when there's room to be cheeky like that.
One very minor thing i'd suggest is to remove the small delay between death and restart. Make it so as soon as the death sound starts playing you can already have another go right away. I always ended up clicking just before because i just wanted to have another go "RIGHT NOW" and it was a tiny speed bump.
Beyond that, it's pretty solid. Good job.