This is a really clever idea! Trying to carefully manipulate and keep track of all the different nodes was just the right level of difficulty, and the controls felt smooth and responsive. The art and sound have a nice atmosphere, and the sound effect when you hit a wall is great. The only criticism I have is that the mechanics feel a bit tedious when you have to move nodes a little bit at a time over and over again, which most of the levels seemed to be based around. Sometimes it felt like I was just moving in circles and waiting for the nodes to line up just right, which was a bit frustrating. Aside from that, I had a lot of fun with the game, and it is one of the more interesting submissions I have played. It's amazing that you accomplished that in just four hours!