The add-on for the Marble Run helps my grandson build even more. Just the right pieces.
Sherry
January 06, 2011
Wish there were more bases included since they tend to break the easiest! Also, wish the parts were all see thru plastic - fun to be able to watch the marbles go!
T.
November 30, 2010
The best toy set that I have ever purchased for my 3yr. old grandson.
