A to K is a sliding puzzle where you swipe the board to merge letters of the alphabet. It has pleasing and very addictive gameplay. Swipe the game board to move all tiles in the indicated direction. When identical letters meet, the merge into the next letter of the alphabet. Turn A's into B's, B's into C's and so on, and see if you can reach the game-winning K tile.

It's not as easy as it may seem, because a new A or B is added to the board with every swipe. So you'll need to come up with a strategy in order to avoid overcrowding on the board. If the board fills up, and no letters can be merged, it's game over.

By the way, the game doesn't end when you reach K - you can keep playing and try to maximize your score for the session. Your maximum score from all sessions is always displayed in the game, so you can try to beat your previous record.