Concentration, also known as Memory, is a classic card game suitable for all ages. The game is developed by Short2Games and is available for free on Android. The game's objective is to match pairs of cards by turning them over two at a time.

The game has three modes. The first mode is Single Play, which is designed for training memory skills alone. The second mode is VS.COM, where you play against the computer. The game is won by taking more number of cards, and the computer has 16 different stages of strength.

Concentration is easy to play and is a great way to improve memory skills. The game has simple rules: each player takes turns choosing two cards and turning them over. If the cards are of the same rank, the player wins the pair and gets to play again. If not, the cards are turned face down, and play passes to the next player. The game ends when all pairs have been picked up.