Swipe up to fire the cube, the same numbers will be merged into a larger number.
Swipe left or right to switch directions.
Try to move the larger number to the top.
Tips:
1. Push only the big numbers up, never push 2 up.
2. Try to avoid 2 in the center. If there is 2 in the center, you should merge the middle ones first.
3. Try to make the numbers orderly
4.The numbers in the four directions of ABCD should not exceed 64.