Siege Machines are special weapons created in the Workshop. They will attempt to drive straight for the enemy Town Hall in order to disgorge its complement of troops. Each type of Siege Machine offers a unique method of transporting and deploying your reinforcements during your attacks.
It is destroyed when it either successfully reaches the Town Hall, or when it is damaged excessively by defenses, or when it is ordered to do so by the player. Upon being destroyed, the Siege Machine releases the Clan Castle troops housed within it.