Concentration

To play, click on any 2 cards to turn them over, if they match they will be discovered and if they are different they will be hidden again but try to remember the cards because you will need it in the future.

The game ends when all cards have been matched.

Features:

- You can choose from different types of grid, difficulty and appearance in the game options. To display the options swipe your finger from the left edge of the screen or click on the time.

- Touch the screen with two fingers and spread them apart or bring them together to scale the size of the board.