Spatial intelligence is important to many fields such as mathmatics, physics, architecture, design etc. But its importance is commonly ignored by the education sector all over the world. So our aim is to promote this intelligence to the people in the world by a funny way - playing puzzle! Suitable : Age 8 or Over Mars Series(Red)Included : level 1-Double 9, level 2-Triangle, level 3-Gourd Ring, level 4-Ancient Cup, level 5 9-Chained Ring