User Summary: The Large Tower - Fortified Pack is part of the Castle Builder System. It is made of "Dwarvenite" and includes some metal and magnetized parts. This item was initially available as an add-on to a pledge level during the Castle Builder System Kickstarter. This pack was specifically designed as an add-on to the Large Tower. The item comes in both painted and unpainted versions. The Large Tower - Fortified Pack comes with these 20 pieces: (1) 6in Tower Half - Solid (1) 6in Tower Half - Arrowslit (2) 6in Tower Arrowslit Wall (2) Tower Stairs - Right (2) 6in Tower Solid Wall (2) Tower Floor (1) 6in Tower Doorway Wall (1) Latticed Door (8) Floor Extension