Choose the numbers of players. Match cards by color or number and be the first to get rid of them. Action cards run the game. Next player in sequence draws two cards and misses a turn. Skip card stops the player. Reverse card switches the direction of the turn to the opposite. Wild card can be places on any card at any time and allows you to change the color of the card. The wild draw four is a special card, allows you to change the color of the card and forces the next player to pick 4 cards.