oh, I just notices something about the game. Let's use easy mode as the example. This seems to e a simple error, but I didn't notice it at first. In essence, the lines that you draw don't stop drawing even though they aren't visible. this can be seen with the most recent attempt in the history of the attached images, where there is 1 line too many. This was just a bug that I noticed, and I thought i'd share. Thanks for making it!
The error in question^ (why does the image seem so large?)