Snap encourages a quick response in a fun and exciting way, encourages memory recall and matching skills. These packs do not match the same image, children will have to think a bit harder, as they will have to match the equivalent and not identically. The cards can also be used as flash cards for lots of other activities explained in the rules in each pack. For ages 8 years and over. Manufacturers limited lifetime guarantee. WARNING(S): Not suitable for children under 3 years old. Only for domestic use.