Most of the feedback I got is the same as the other's (green to the left, lack of art and audio, etc).
On the last level I managed to put both green robots on the same tile, which made the level really easy. I have a feeling that wasn't intended.
The game could use some strong theming (the current art made me think of roombas) and some additional mechanics (collect something before making it to the goals? Magnetic bots?) to truly shine.