Train your brain with this classic memory exercise. Each set is randomized and you have the ability to choose 4 to 48 random cards. Great for kids, adults and the elderly. Simple interface allows you to change the number of cards. Compete against your best time. Great memory trainer. Great kids game to keep the kids busy on a road trip. Great for hand eye coordination. Great for training hand eye coordination. Pre-school, vacations, elderly care facilities.