Loved the art style of this game - thought the designs for the ghosts were superb. Really novel concept! I'm not sure if it was intentional or not, but having the red and blue buttons the opposite way round from how I expected them really had me concentrating hard on whether I needed to press A or S. I also thought the difficulty curve was well adjusted for the first 10 levels. One suggestion I have as an improvement is that you could also have implemented getting a certain number of orders in per night (with the timer getting slightly faster with each level) as I found after level 10 that the difficulty hit a bit of a plateau. Really well implemented though!