The Bust-A-Move series moves onto the Xbox with an online multiplayer mode, a new 3D Puzzle mode, and five new Challenge Puzzle modes. As in previous installments, your task in Ultra Bust-A-Move is to launch randomly colored balls from the bottom of the field in an attempt to attach them to bubbles of the same color. Once three bubbles of the same color are touching, they pop, causing all connected bubbles to drop. Your objective is to clear the screen of all bubbles.