The Picasso Tiles PTG108 is a comprehensive 108-piece magnetic construction set that combines marble run and racetrack functionality in a versatile building system. This educational STEM toy consists of durable plastic components with integrated magnets, including 32 magnetic square track pieces, 10 straight slides, 8 U-curves, 6 quarter turns, 4 ramp pieces, 4 rectangular track pieces, 6 additional square pieces, 4 marble slides, 4 long slides/columns, 6 quarter turn track pieces, 2 LED race cars, 4 steel marbles, 2 staircase slides, 1 funnel, and 15 columns. The standard pieces each measure approximately 7.5 x 7.5 cm. Children can construct impressive three-dimensional marble runs and racetracks or combine both systems into interactive mega constructions. The set promotes the development of fine motor skills, logical thinking, coordination, and problem-solving abilities while basic concepts from science, technology, engineering, and mathematics are conveyed through hands-on play. The LED race cars require 2 AA batteries (not included) for visual effects during racing activities. This construction toy is fully compatible with all Picasso Tiles sets and many other magnetic tile systems, allowing for expansions and more complex building projects. Suitable for children aged 3 and up, the modular design with magnetic connections enables endless creative configurations and rebuilding possibilities. The multicolored components provide visual appeal while maintaining a focus on the educational and constructive aspects of the toy.