This  is a bag of 87 original Udeas pieces that you could use to build upon your existing set, or use as a starter set. This set is missing some pieces from the way it was originally. You can build a small maze with whats here, but of course its better if you have more parts to build a bigger maze. A few of the orange inserts have some of the tabs missing, but it doesn't seem to affect the functionality.

There are a few steel marbles and a few regular marbles here.

Thanks for looking!

S6