Couldn't get past the 2nd level tbh, but I have some feedback
- It would be great if there's a reset button to get the level back to its original state
- I'm not a graphic designer, so curves are not intuitive for me, but the second level already gets too complex before I get to understand the mechanics
- The gradient on the curve make it hard to see which star controls which part
- The sound effects while nice get too noisy while trying to figure out what to do, maybe an option to only play the sound for a single node the gets touched and then play the full sequence once the curve is complete