In Perfect Numbers you’ll take groups of cards from the ‘market’, sort them by color and add them to your own collection. By taking a perfect number from the market, you can complete a colored row. All cards in this row go to your point pile and represent one point per card. You are enticed to make longer rows, as you’ll get bonus points. But this increases the risk of having to discard cards. The winner has collected the most points (cards) at the end of the game. The game is an eco-friendly game, meaning it is made of FSC materials, bio-degradable plastic and ink, and resin instead of glue. The full carbon footprint is also compensated. To emphasize the eco-friendly nature, the cards are set in the different climate zones and the animals are made of trash. —description from the publisher