The card game Tic Tac Toe offers two game modes. The first is the classic tic tac toe game, where the cards are paired into pairs. The game includes 12 pairs of cards, while one card remains extra as the 'black Peter'. The player who ends up with the black Peter at the end of the game loses.
The second way is the Memory game, where the cards are laid face down. Players on their turn flip two cards. If they form a pair, the player scores a point. If the cards do not form a pair, they are returned to the table.