Join the tiles and get to the K tile!
How to play: Use your arrow keys to move the tiles. When two tiles with the same value touch, they merge into one!
If this seems excessively complicated, you can try
this letter-only one instead...
If, instead, your complaint is just that n + -n is zero, then play
2048−2048. But I don't know why you'd want to. It's mostly just frustrating.