Can you get the 21 tile?
How to play: Use your space bar to spawn tiles. Use your arrow keys to move the tiles. When three tiles with the same number touch, they merge into one!
Note: This site is the official version of 21.
The original 2048 was created by Gabriele Cirulli. Based on 1024 by Veewo Studio and conceptually similar to Threes by Asher Vollmer.