Concentration (Matching Pairs)

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