Block-N-Roll is the only patented horizontally integrated marble maze on the market today that is compatible with all leading plastic building blocks, including DUPLO® and Mega Blok®. Never the same toy twice! Block-N-Roll™ has hundreds of building options to create plenty of action by dropping, tunneling, ramps, cross-overs, and turns... Attach and detach Block-N-Roll™ pieces by sliding them together. Start the construction of your maze from the bottom and work up. Support and raise your Block-N-Roll™ pieces with DUPLO® brand blocks, Mega Blok® or the new Taurus Block. Bring out your old construction blocks with Block-N-Roll™ to create incredible marble mazes. In addition to producing colorful and exciting maze systems, Block-N-Roll™ develops manipulative skills, promotes creativity, and strategic thinking. FEATURES Deluxe Set Includes Base Plate Features built-in carry handle Educational: teaches cause and effect Makes a creative environment Attaches to all leading construction blocks BNR Dimple Blocks have a dovetail interlocking system Build parallel mazes and race your marbles Make your marbles go fast or slow Ideal age grouping -- 6 to 12 years old 200-PIECE SET includes: 28 Straight Ramps 30 Ramps 36 90°s 10 Start/Stops 8 Crossovers 4 Drop-Thrus 64 BNR Dimple Blocks 1 Base Plate 20 Marbles