When your little builder outgrows the simple Lego sets, MEGA Brands Struxx ROBOTRIXX set offers a challenging build with motorized parts. The Struxx pieces are easy for kids to handle and connect. This set integrates several nifty technological features – motion detection, lights and sounds, and gearbox – that make your child’s creation move and shine.  The package comes with 502 strong, flexible pieces that can be crafted into a T-Rex, jaguar, shark, and several other designs. The set is great for beginners and experts. Ideal for children 6 and up.