The expansion pack is brand new and has never been opened. Also the invention system or the blue box has never been opened for some reason after years I checked the tape and it decided to shrink and pop itself off the side without damaging the box, so now its a opened box but never used. everything is in its original packages if it had a package, some things were just on shelves in the box but still not played with. see pictures or ask for more. thanks for looking