Gameplay  

On the word "Go!" each player tries to find a card matching their Captain Card, or a card that has only one attribute that is different from their Captain Card. If they find such a card, they grab it and stack it face up on top of their Captain Card, and then search for a card that matches-or only bears one difference from the new top card of their stack. This is not done in turn: Players are reaching for cards, throwing elbows, flicking the backs of others' hands, etc. trying to make a mad grab for their cards all at once. Once a player has determined that they can no longer legally grab a card, they slam their hand down and yell "STOP!" Everyone double-checks to see if the player who yelled stop was correct; if they were, they get to add an extra card from the grid to their pile. If they jumped the gun, they discard all the cards they gathered that round.

Then all the players lay their cards out in order to check that they made no errors; if they didn't make mistakes, they keep all of their cards (which count for 1 point at the end of the game); if they made even one error, they lose all of those cards.

Then each player is dealt a new Captain Card, the grid is refilled, and a new round begins. The game is over when there are not enough cards to refill the grid (usually after about 3 rounds). The cards are counted and the player with the most wins!