Meet and experience the digital unification game together. Skillfully move the numbers +1, -1, +2 and -2 to the appropriate numbers to make addition and subtraction. With the same number blocks of 3 or more blocks near each other, they will be combined to become bigger blocks. How to play: - This game is easy to learn how to play. It only takes you 1 minute to get used to it. But to become an expert will be very difficult. - You will have 5 original cards and can drag this card to any card in t