- Silver Tile
Cannot be removed in the usual way, by matching it with other silver tiles. To remove it, activate a bomb or lightning nearby. - Marble Tile
Cannot be removed in the usual way, by matching it with other marble tiles. To remove it, either match tiles next to it or activate a bomb or lightning nearby. - Stone
Blocks a cell. To remove it, match tiles next to it. Stone can have reinforcement(s). Each reinforcement requires either an additional tile match or a bomb/lightning activation to be destroyed. - Metal
Blocks a cell. To remove it, either match tiles next to it or activate a bomb or lightning nearby. - Chain
Blocks a tile's movement. To remove it, match a combination with the blocked tile. To unlock a double-chained cell, match a combination with a tile in this cell two times. - Portal
A pair of cells, one of which is the entrance and the other is the exit. When the exit cell is empty, the tile from the connected entrance cell drops into it.