your game is working nice, heres my feedback...
- really good music, i like the variety of music for different size levels
- good sound effects
- gameplays is interesting and pretty fun
- camera is centered way below the current node, i think if it was centered the control would be easier
- the camera rotating around is distracting, id like the camera to just stay in the orientation it is.
- turning off camera zoom on move helped a little but i dont want it to rotate at all
- after beating a level, the default button should be "next level", i accidentally played the same level again a few times and was confused. even after i did it the first time it happened again before i realized i needed to go back to the level select.
- this would be a cool hacking mini game for a larger game
- maybe add some progression so instead of everything available from the start you need to beat a few levels of each size to unlock the next size group
- some story could help keep players invested