Join the numbers to eliminate all the tiles!
How to play: Use your arrow keys to move the tiles. When two tiles with the same number touch, they merge into one. But when two tiles with opposite values touch, they dissapear!
Note: This site is the official version of zero. You can play it on your phone via http://glyphobet.github.io/zero/.
Modified by @glyphobet, based on 2048 by Gabriele Cirulli, which was in turn based on 1024 by Veewo Studio and conceptually similar to Threes by Asher Vollmer.