inspired by Gabriele Cirulli game available on the web: http://gabrielecirulli.github.io/2048/, and ketchapps app "2048"
Swipe to move all tiles. When two tiles with the same number touch, they merge into one.
Join the numbers and get to the 2048 - 8192 - 1024 based on the games mode
Get to the 2048 - 8192 - 1024 tile, and reach a high score!