Upon starting the level, the spiked ceiling will start at the top of the play area. About once every eighteen seconds, it will move down one row, slowly taking away workable space. The player is able to make the ceiling go back up, however, if they can clear three or four rows at once. The ceiling will also destroy any placed blocks that are in its way. This can be used as a garbage disposal, by having it remove any unwanted pieces until the piece the player wants shows up.