Get ready to race with the 105 Piece Marble Run Game! Create towers, bridges and obstacle courses packed with spinners, chutes and more. This 105 piece set includes colourful and transparent track pieces, 15 glass marbles, 15 plastic marbles, and all the accessories you'll need to build fun and unique marble runs!Follow the simple instructional guide to get started, then get creative and make your very own combinations! Easy to build, with everything you need to design simple or complex structures, this marble run set lets you explore physics concepts as you build and play.