Original 3D Crystal Puzzles feature uniquely-shaped, interlocking, translucent crystalline pieces that give puzzling a whole new dimension.
I'm a grandparent of preteen & teen kids who have enjoyed joining us in puzzle fun. Each received a different "crystal" puzzle for Easter. There were absolutely no instructions with a box full of same-color of plastic pieces and all 5 kids lost interest quickly. This was quite a waste of money and disappointment to all of us.