'  Use them to organize your thoughts and ideas

these rechargeable companions are ready for any adventure

spatial relations

bubble guns

and leaping

GraviTrax: Starter Set crimes ' Use them to organizeWith the GraviTrax Starter Set, there are no limits to creativity. Numerous components allow for a varied marble run experience. With the GraviTrax Starter Set, the spirit of invention is unleashed and everyone can dive straight into the huge, endlessly expandable marble run universe. With over 120 parts and a variety of building stones, nothing stands in the way of surprising and action packed building fun. The example tracks and instructions provide