A 2-player, 8-card micro game similar to Hanabi in that your cards are facing your opponent. You take turn asking about the sum of two cards at a time, and your opponent must answer 'Yes', 'No, lower', or 'No, higher'. You also have the option to point to one of your opponents cards and turn it 180 degrees, which will change the cards value. Each card features opposed top and bottom halves with different values, and only the value on the upper part counts. The winner is the first player to guess the value of each of their cards in turn.