Concentration is a memory game where you match pairs of cards. Click on a card to reveal its sound. Click on another card to reveal its sound. If the sounds match, the cards stay face up. If the sounds do not match, the cards flip back over. The game is over when all cards are face up!
Choose the number of cards you want to play with.
Pro-tip: Study the fart sounds before playing the game.
More information about the Concentration game can be found on Wikipedia.