Via Theorème, (which, by the way, now includes Jacques Dubucs in the list of contributors!) a link to a logic-themed online memory game. According to Theorème, the author is one Nicolas Le Thierry d’Ennequin. Thanks, Nick!
Just in case you forgot the rules to Memory: Turn over two cards. If they match, remove them from the game, and go again. Otherwise, cover the cards. Next player goes. Whoever removed the most pairs of cards wins.