There are 15 tiles on the field with 16 cells. One cell is empty. You may shift the neighbour tile to the empty cell, and move tiles on the field this way. In this game there are white and yellow tiles, numbered from 1 to 8. When two tiles with equal numbers appear one-next-to-another, they merge and annihilate (disappear). Your aim is to merge and annihilate all tiles from the field. The set finishes, when only the last tile, that has no pair, remains on field. And you go to the next level.