I'm not sure. I thought this was the best game for my cat, Finster, since I always get tired of pointing the laser watching him cross the rooms of the house. He was sleeping, so I thought this would wake him up. Didn't happen. He just watched like it was television. So I moved his paw to show him how it worked. He understood, but then started putting his white tiny paw UNDER the iPod. I'm like, "Finster, it's not under, its on it." then he just foregot about the whole thing again and started using the ipod touch as a pillow. Probably he wasn't in the mood. I guess he was just a tired little puss. Oh, well. He will have to be up and off my bed to do it. But for now, I will give it 4 stars. ;) (;