NS Pairs - classic memory game

NS Pairs is a classic memory game, also known as Memorize, Concentration, Pelmanism, Shinkei-suijaku or simply Pairs.
It is a card game where all of the cards are laid face down on a surface and two cards are flipped face up on every game turn. The objective of this game is to turn over pairs of matching cards.
Train your concentration and memory using this game.