One draw back, it moves a little too fast. You might think you are stopping on a block and hit enter before thinking, or realizing that you have overshot your mark. I know what you are thinking, "I would never do that, this W Hibdon guy must be a real idiot." However, if my idiocy does not factor in to this, it is very easy to over shoot, unless you are very carful. And because the game is as fun as it is, it is easy to stop paying that close attention; it only takes one slip up to end the game.