Concentration is a card game in which all of the cards are laid face down on a surface and two cards are flipped face up over each turn. The objective of the game is to use your memory and turn over pairs of matching cards.


MODES:
- 4x4 with colored geometric shapes
- 6x6 with colored numbers
- 8x8 with colored letters and symbols

FEATURES:
- google play games achievements
- google play games leaderboards