I forgot to mention the game itself.
The controls are pretty good, you just have to click in an area a little further down the gear. Although sometimes it does not go exactly as expected.
I think it would be smart to vary the colors so as to alternate the difficulty. Or even create sections of space with more rectangles and colors depending on a scoring phase reached. I say that in a way that makes the game less static. You are free to do so! Like rotating it would be wise for example.
The game is blocked when I reach 178 points. There were no gears that fell. So I rechecked and beat my score without a similar incident. The overlapping of the gears is a bit disturbing since an element with another color can be hidden. And I don't really like the way the program instantly closes after losing. The idea of the concept and there, now needs to be improved.