Add these special cards to a classic UNO deck (sold separately) and the fun begins! All 16 cards in this pack have a 'Speed Up' icon on them which increases the number of cards players must discard on their turn. Normal play is at level '1', but at level '2' each player must discard two cards on their turn, at level '3', three cards and so on as the 'speed' increases. There's even special Wild Cards that have two 'Speed Up' icons that increase the speed two levels instead of just one!