Ion: A Compound Building Game | A Strategy Card Game with Accurate Science CHEMISTRY CARD GAME - Learn chemistry from Ion, a science game where players build neutral compounds from a hand of positive and negative ions. In chemistry class, this is called ionic bonding. STRATEGIC PLAY - Play a game about chemical bonds with a level of strategy that will engage an adult gamer, yet straightforward enough kids as young as 8 can play with family or in the classroom. ACCURATE SCIENCE - All elements, molecules and science vocabulary are concepts covered in high school chemistry class, making it one of the best educational games teachers can use to teach science. BEST SCIENCE GIFT - Science teachers, chemists, scientists, and students love playing this geeky science game with friends and family. Perfect for the gamers shelf or the science classroom. LEARN SCIENCE - A game for the classroom designed to teach chemistry and chemical bonding at middle school, high school or college levels, Ion complies with NGSS standards and STEM principles.