2048 begins when you choose a direction. You can move all tiles up, down, left, or right. Every tile slides as far as possible in that direction. Matching tiles merge only once during the same move.

2048 game, a row with 2, 2, 4, and 4 can become 4 and 8 after the correct move. The order of the tiles is important. You should watch how several merges can change the entire board.