The goal of the game is to deal damage to your opponent until they run out of cards. Turns are simultaneous. A round begins with a card draw, then each player may play a card face-down as an energy card. Then, players roll their Bakugan (spheres which transform via a magnet) at the hide matrix, a series of metallic tiles each of which is referred to a Baku-core. Brawls are resolved by comparing BP with ties determined by flipping a card, with the higher cost breaking the tie. The winner will the deal damage to the opponent based on its damage value. Cards may be played at almost anytime.