Neat idea. I had to play it intentionally badly before I realized that I was getting scored, haha. It might be a little too easy to get A+, or maybe that was an intentional commentary on the futility of trying to line up papers better before stapling, because it'll never be perfect, but nobody really minds, 'cause it's just a staple? Either way, if you'd ilke to make it more challenging, you could make the player both translate and rotate the papers, 'cause then you'd have to get the centers to line up and orient them. You could also have the motion of one paper slightly mess up the position/orientation of the other paper, so you have to keep readjusting them. Anyway, I like the pixely look, and I hope you had fun making it. :)