The object of game is to match blocks of same color and remove them. By Using left/right arrow to move blocks, up arrow to rotate the color of blocks, try to form a set of three or more blocks of the same color either horizontally, vertically or diagonally. Sets of matched blocks will be removed, the score is the square of number of blocks removed. Use down arrow to drop quickly.If a set of blocks is removed from the playing field, the blocks on top will drop, and if these dropped blocks form a new set, the new set can also be removed. When the blocks reach the top of field, game is over.