The variety of possible tracks and the practical connection system with other trackmaster sets (sold separately, subject to availability) make this set the perfect toy to stimulate children's imagination. Curiosity goes full steam whenever the super bright locomotives (sold separately, subject to availability) advance illuminating the fluorescent track. The top case can be used to store all the pieces. The top case cover can also be part of the track. Thanks to the variety of possible tracks, children will play for hours with this fantastic glow in the dark trackmaster set.