O:< nice! I really like the idea you went with, very fun puzzle mechanic that I haven't encountered before. The visuals and the music you used work very well together, and I like the introduction of the double line between nodes, which added another level of complexity and a feeling of progressing.
I did find the screen shake when you destroy a node to be a bit too much, so I didn't finish the last 2 levels. Also on level 5 it's possible to be at a fail state withot the game realising and restarting you.