Well this definitely had me distracted with the control scheme, though it felt like the people were a bit inconsistent with whether or not I would "get" them. Though I'm not sure if that's just me feeling that or not. The colours do make things relatively clear, as well as the shapes helping with that which was nice.
Although the "people" counter being top left was a bit out of the way which mean that I almost didn't notice, it, which to be fair, is pretty easy to do when it's just a counter. So not surprising.
Overall though it's an interesting way to use input method to follow the theme, since you're having to balance good ol mouse control and keyboard shenanigans