107 Full-Color Rooms And Corridors With 124 Assorted Pits, Doors, Walls, Shafts, And Other Subterranean Architectural Paraphernalia Dungeon For Sale! Cheap! Make your games more visual and exciting! Fill your table with dungeon rooms and corridors . . . at a bargain price. The Cardboard Heroes Dungeon Floors are marked off with both square and hex grids, so they'll work with any game system. Infinite layouts, infinite dangers.