I found the mechanics very interesting, I like games that let you solve the problem in different ways. I for example,ended up using more the dots than the lines haha. And I had random solutions like the one below that entertained me.
some personal suggestions:
* add more music, it gets a bit repetitive over time.
* allow drawing the line convex or concave
* add a button to reset the phase, it gets a bit tedious to have to remove a wrong solution every 1 in 1.
* increase the click area to erase the lines, to make it easier to click.
* check if the processing influences the physics, because I was going to record the gameplay, and with OBS on, get different results.
Thanks for the game, and congratulations.