To play, players take turns playing one or more cards from their hand in order to match the color or number value on the central card. If the central card is a green 6, then you could play a green card, a 6 card, or two cards equaling 6. Action cards spice things up a notch, as they can swap hands, force a player to miss a turn, and more. Collect the numbers required by your code card—and discard anything that doesn’t match—and you win!