Atom Monsters Tankyu Quest Basic Pack Expansion Plus Green Expansion Plus Purple 3-Pack Set Chemistry Battle Game - Set Contents: 3 sets of Atom Monsters cards - Number of Cards: Includes multiple cards - Game Rules: A guide with the rules of Atom Monsters - Package: Comes with the original packaging - Design: Features colorful characters and illustrations Purchased new, but hardly played. The basic pack instruction manual has a small tear. Upon checking the contents of the basic pack cards on the official website, it seems that the contents differ slightly from when purchased. The official website lists 2 water molecules, but I have 3. The official website lists 2 hydrogen cyanide, but I have 1. Please consider this when purchasing. Thank you for looking. No pets or smokers.