How to use: First, take out your Bakugan from the set. Find a flat surface and roll it across one of the included metal BakuCores. You'll see it transform with a cool pop - open action. Use the included Gate - Card during your battles to get more ways to play and earn bonuses. You can face off against your friends with your Bakugan to become the ultimate Bakugan Master. Collect more characters from Season 4, like Nanogan and Platinum Bakugan (sold separately) to build a stronger team. Note: Keep the small parts like the Character Card, Gate - Card, and Collector Sheet away from small children to avoid choking hazards. Maintenance: When not in use, store your Bakugan and other items in a dry place. If your Bakugan gets dirty, you can gently wipe it with a soft, dry cloth.