Interesting game, but I didn't get very far, there was just too much going on for me. I think it would help if there weren't quite so many crossings of the lines, especially with multiple of the same color and with ere being crossings that don't have a stop. Having sounds to indicate when new items appear or expire and when moving would also be helpful.
Also as a tip, if you can upload a web build as well (I believe Unity allows web exports), that would also help with accessibility and make it more likely for more people to play & rate your game.