The Bakugan Gundalian Invaders BakuBoost set is a great way to grow your collection of Bakugan. Roll the Bakugan onto the Metal Gate card to see it transform into a monster, then use the Ability card to triumph over your opponent. Each Bakugan has awesome transformation actions and special in-game abilities as seen on the Bakugan: Gundalian Invaders television show. Each Gundalian Invaders series Bakugan has a hidden code on it, which you can enter online to unleash your monsters in the online world of Bakugan Dimensions.Colours and styles may vary. One Bakugan supplied. Suitable for ages 5 and up.