Miniland Marbulous Marble Run Building Kit (46 Piece) Design, build and play! The Miniland Marbulous Marble Run is a 56-piece set that lets your little one create their own course Marble runs are a great way for children to expand their cause and effect reasoning and problem solving skills An infinite number of assembly combinations means endless fun! Comes with towers, tubes, rails, roulette circuit and scoops For ages 4 and up