Really fun game! I love how simple to get it is, and congrats to you for having avoided overcomplicating the levels: the game results in a pleasant little thing that doesn’t overstay its welcome.
I will only say that I would have created a different sprite for the robot for when it was stopped, since as it is you cannot immediately tell. But apart from that the visuals are really appealing, the music is nice though a bit repetitive and the controls are perfect for it.
Good job! ^-^