You got bug during final movie - you didn't disable controls. Had problems running the game on FireFox. Chrome worked fine.
Now to the point - this is cool! Really cool. Unique artstyle and feel. Puzzles that were hard just right. Nicely executed merging/player changing with just spacebar alone. I truly enjoyed interacting with the game. There were a little things that got under my skin. At moments I felt I was struggling with controls but beside that... loved the game <3