Thanks for the feedback. I'll add your eraser suggestion to the list of things to develop before the next DD, although I doubt it will come out as nice as you hope since the line you draw is made using points so I imagine it will just be deleting a point and splitting the line into two. I might just incorporate this into a line edit tool instead. Currently I'm thinking of just adding more levels and mechanics, I think a challenge mode might be interesting to do in the future but I think I'll just focus on the core gameplay for now.