Parity Othello Card Game- What's black and white and green all over? The new game of Parity--the Othello Card Game! Capture as many disks as possible in eachround to win the most Parity cards. With 51 cards to play off of the Centerpiece Card, Parity has a similar strategy as the familiar favorite game of Othello. for 2-4 players, ages 8 and up. Click here to Contact Us Product Number USPA100