How to use: First, take out your Bakugan and the metal BakuCores. Roll the Bakugan across the BakuCores and enjoy the pop - open transformation. You can use the included Gate - Card to add more fun to your battles. When playing with friends, each player can use their own Bakugan to compete. To earn bonuses, use the Gate - Card as described. Note: Keep small parts away from young children as they may pose a choking hazard. When not in use, store your Bakugan and cards in a cool, dry place to prevent damage. If the Bakugan gets dirty, you can gently clean it with a soft, dry cloth. Enjoy your Bakugan battles!