Swipe with your finger to move numbers between tiles.
When two tiles with the same number touch, they merge into one
So if you merge two number 2 tiles, they become 4, and so on. 4 becomes 8, becomes 16, becomes 32, becomes 64, becomes 128, becomes 256, becomes 512, becomes 1024, and finally 2048. When a 2048 tile is created, the player wins.