【New Arrival ROKR Marble Run】This is not only a 3D wooden puzzle,but also a real marble run.Build the set and crank the handle, watch marbles run crazy down the slopes and twisting turns.LGA01 Marble Night City is a handcrafted marble set with striking fortress. Build it with 294 building pieces and 10 marbles. 【No Glue Needed】Unique Mechanical 3D Puzzle,laser-cut ply wood,no tonxic,environmental friendly,smooth wooden board.All pieces are pre-cut,no glue needed.The interlocking mechanisms are pretty ingenious.Consists of a tower distributor,spiral slopes, a crane lifer, a wheel lifter, a short slide and small switches. 【Detailed English Instruction】Making this mechanical model toy requires not only attentiveness but also patience.Feel the pride of assembling this entire IQ toy set-up with your very own hands. 【Creative Gift】What a fascinating thing to see the mechanical miracle coming to life by your own hands.Best Holiday gift for your boyfriend,girlfriend,husband,wife who is model builder or puzzle lover.It looks so cool and creates a decent challenge for an adult. 【Perfect Decoration】The 3D wooden puzzle has decorative designs that look captivating in the finished product.It is a challenge for both eyes and hands,and also a perfect display for stylish collections!