Use the arrow keys (or swipe on touch) to slide all tiles in one direction. When two tiles with the same number collide, they merge into one whose value is their sum. After every move a new 2 or 4 appears in an empty cell. The goal is to reach the 2048 tile — but you can keep going for 4096 and beyond.
Pick a corner and keep your highest tile pinned there. Build a descending chain along one row or column. Avoid moves that disturb the corner — usually never press the direction that empties it. The game ends when the board fills up and no merges remain.
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