The Deck of Change is a deck of 64-cards with 8 numbers and 8 symbols. It is an open game system designed primarily for fun. It is versatile, multipurpose, and mathematically satisfying to play around with. These cards might just bring out the most fun you can ever have with your family, friends, and even strangers. Kids from age 7 to 107 can enjoy the different games for 1 to 16 players. The deck has 64 cards, 8 numbers (0-7), and 8 symbols (yin, energy, force, space, matter, entropy, time, yang). There are 3 versions of the deck. They are practically the same deck. The main difference is in the visuals. Deck #1: The AiTiA is designed for functionality. Deck #2: The Gauntlet is designed for imagination featuring artwork by Patrick Enrique. And, Deck #3: The Cauldron has bigger cards designed for creativity and brainstorming.