The game has two boards: one for Buster, and one for the player. Each board has a 4x4 grid of cards on it. Buster will pull a card from the deck in the middle, and declare if it matches one of the cards on his board or not. The player then gets to look for a matching card on their board. Clicking on the correct card will mark it off the player's board. If it isn't there, they can click the deck of cards to draw a new one. The game progresses until either the player, or Buster, gets four card matches in a row, either horizontally or vertically.