I like the art style. It looks really simple, but at the same time very good. The mechanics are interesting. It would have been cool if you could add walls into the middle of the room in order to have a bit of control over the player or at least to "protect" the dots. It gets to difficult avoid that the player is collecting a lot of them in a row once you have accumulated many of them, especially when the movement is not predictable.
Good job :) !