Too easy, does not adjust to screen size.
I have an iPhone 13 Pro and the sides and this game does not fit the screen resolution. The sides are cut off which makes some points impossible to get to since they are offscreen. The game is also ridiculously easy for anyone who took higher level math. SPOILER: STOP READING IF YOU WANT TO FIGURE OUT THE PUZZLES FOR YOURSELF. Just start with any point that has an odd number of lines coming out and end on the other point with odd lines coming out. There are only 2 or else the puzzle is unsolvable.