Each Sonic X Shadow the Hedgehog Booster Box contains 10 trading cards game per pack and 12 booster packs in display box.
Players enter a fast-paced card game game to be the first to gain 3 Chaos Emeralds. During a game, players play face-down cards and then alternate flipping them over. When cards flip over, their effects discard cards from play releasing a host of fun effects. After all cards are face-up, players count the rings on all their cards.The player with the most rings at the end of the turn wins the Chaos emerald for the turn!