The goal of the game is to prevent blocks from filling the field up to the top by removing groups of tiles with the same image. If you click such group, it will disappear from game board. The tiles that are on top of the removed group will fall down. A line at the bottom will be added to the board. You should try to take off as many tiles as possible with a single click. The more tiles you destroy at the same time - the higher score you get.