Match at least three blocks of the same color (vertically, horizontally, diagonally) to remove them. If you pass the first floor, you'll see a red diamond [6] that can only be destroyed by special blocks. If none of the blocks falls on the floor, it means the game is over.
Special blocks may appear during the game [1]eliminates all the blocks of the same kind [2]eliminates the blocks vertically [3]eliminates the surrounding blocks [4]eliminates all the blocks horizontally [5]the block that can only be removed from the board with the use of other special blocks.