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To set up the game, deal each player fifteen cards. Without looking at the cards, they lay out nine cards in a 3x3 grid, then place the remaining six in a personal stack. On a turn, draw a card from the deck or the discard pile, then exchange it with a card in your grid, discarding that card face up; alternatively, you can discard the drawn card to reveal a face-down card in your grid. With the right card in hand, you can even steal a card from another player's grid.

As soon as you have three cards of the same color or number in a row, whether vertically, horizontally or diagonally, you discard those cards, then replace them with face-down cards from your personal stack. If a player has discarded all 15 of their cards or all cards in all grids are face up, the game ends, and players tally their remaining cards. Whoever has the lowest score wins.