Neat little Dropper game. Nice work!
One piece of criticism I'd like to give is that it's pretty unclear that the score multiplier object increases your score multiplier and isn't simply another platform. I started avoiding them at first because I thought they would cause me to lose a life like any other platform. Maybe you could add some kind of symbol or an aura or something similar to convey it better. Even just making it smaller and a different shape could help.