2048 game - doubling numbers - addictive!

Here's a fun little game that I really liked! It's called the 2048 game.  It is very simple, yet fun.  And it's addictive, I'd say. :)

Slide the tiles using the arrow keys, and if the neighboring numbers are the same, the number will double. (ALL the tiles slide when you press any of the arrow keys, in that direction). The numbers keep doubling... can you reach tile 2048? I haven't yet!