Clear 4 challenges you to ditch your twenty cards more quickly than anyone else.

To set up, each player gets twenty random cards from a deck that contains ten copies each of 1-10, as well as a few JOKER, PUSH, and CLEAR cards. Without looking at these cards, each player creates four piles of a horizontal card, a vertical card, then a face-up card, with the remaining eight cards (along with their face-up cards) forming their hand.

On a turn, you play number cards, play a special card (PUSH or CLEAR), or pass. To play number cards, you choose one or more number cards of the same value in your hand and place them on the discard pile — but only if the number is not greater than the top card on the discard pile. If you play a face-up card from the table, you reveal the vertical card underneath — and you can play that immediately if it's the same value!

Played cards in the discard pile are fanned out, and as soon as four cards of the same value are visible, the discard pile is removed from play, then the active player takes another turn.

A JOKER is any value and played alone or with other number cards. To play CLEAR, remove that card — and the discard pile —from play, then take another turn. To play PUSH, remove that card from play, then push the discard pile in front of another player, who must add all cards in it to their hand; your turn then ends.

To pass, add the discard pile to your hand.

Each horizontal card is not revealed until you try to play it on a turn. Flip it onto the discard pile. If it's a PUSH or CLEAR, carry it out like normal; if it's a number that can be played, great! If not — you guessed it — add the discard pile to your hand.