Merge numbers puzzle

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 the chessboard area. - When meeting a card on the board they will calculate the total of 2 cards on the board. - With every 3 identical cards near each other will combine to form a bigger new card. - You can hold up to 5 cards. The game will end when your card number reaches zero. Interesting game features: - Simple game combining blocks and addictive. - Practice the ability to do addition and subtraction quickly. - Is an interesting game for adults to play with friends and challenge relatives.