2048

The classic 2048. Each move slides every tile in the chosen direction; two tiles with the same value collide into a tile of double their value. After every move a new 2 (or, occasionally, a 4) appears on a random empty cell. Reach the 2048 tile to win — or keep going for a higher score.

On desktop use the arrow keys (or WASD). On touch devices, swipe in the direction you want the tiles to slide. Score is the sum of every merge you make; higher is better. The round ends when the board is full and no merges are possible.