Inspired by the game 2048: http://gabrielecirulli.github.io/2048
Now the size is extended to 5x5 with new rules.
The game has 2 difficulties: 4x4(2048), 5x5(4096)
Swipe with your finger to move numbers between tiles. When two tiles with the same number touch, they merge into one. Join the numbers and get to 4096 tiles.