When the line is removed we create tetriminos out of any settled blocks that were above that line. This lets those blocks fall down again. If the blocks above the line are in multiple clusters, multiple tetriminos are created, so that the block clusters fall as far as they can.
When the line is removed we create tetriminos out of any settled blocks that were above that line. This lets those blocks fall down again. If the blocks above the line are in multiple clusters, multiple tetriminos are created, so that the block clusters fall as far as they can.