• This is the basic set for GraviTrax The package has been redesigned to make the set contents clearer! • Follow the instructions to assemble and once you have mastered the basics, design your own original course! • The GraviTrax is a system toy that allows anyone to easily create their own action-packed courses using the principles of gravity, magnetism and power • You can create a different course every time you play by freely designing with various parts • Set contents: 124 pieces, Suitable for ages: 8 and up