Combine tiles of the same number in an attempt to create a tile with the value 2048.
Pressing the arrow keys or swiping across the game board will move all tiles in the direction of the key pressed/swipe. After all the tiles are done moving a new tile with the value of 2 or 4 will be created in a random empty cell.
Two tiles with the same number will merge when they collide to create a single tile with double the value.
The game is over when there are no valid ways for you to move the tiles.
