These letters automatically move downwards, burning through letters below them in the column, until they reach the bottom of the grid, ending the game. In the Classic mode, they burn down one level after each turn, and the game ends once the burning tile reaches the bottom. In the Action mode, they automatically appear and burn down a level every few seconds, and if a burning tile gets to the bottom, the player must clear the burning tile within ten seconds, otherwise, the game ends.