To play the game, your goal is to reach the number 10 by combining tiles with the same number. To do this, use your mouse to click on a tile that is adjacent to one or more tiles with the same number. This will select the group of tiles. Then, click again to combine the tiles into a single tile with a number that is one higher. Keep combining tiles and try to avoid getting stuck with non-matching tiles as you work towards the goal of reaching the number 10. Click on adjacent tiles with the same number to select and combine them as you play.