Classic Dungeon Advanced Builder is part of the Dungeon of Doom series. It took parts of the original Game Tiles (KS1) series, and redesigned their look and package. It is made of "Dwarvenite" and includes some metal and magnetized parts. This item was initially available as an add-on pack during the Dungeon of Doom Kickstarter. The item comes in both painted and unpainted versions. Classic Dungeon Advanced Builder comes with these 38 pieces: (2) KS1 Freestanding Wall (2) KS1 Short Freestanding Wall (4) Classic Dungeon Freestanding Corner (Magnetic) (8) Classic Dungeon 1x1 Wall (4) Classic Dungeon 1x1 Corner (8) 1x1 Dungeon Floor (8) 1x2 Dungeon Floor (1) 1x4 Dungeon Floor (1) Vaulted Door Corner (w Narrow Ancient Door)