Dr. Robotnik has hatched a plan to ensure that no music or fun remains on Mobius. To do this, he kidnaps the citizens of Beanville and stuffs them into a giant robotising machine called the Mean Bean-Steaming Machine, so that they become his robot slaves. The player must now defeat each of the robot guards and Robotnik himself to foil his evil plans.
In the game, a player must group 4 or more different colored beans (or Puyos) together so that they erase, and send Refugee Beans (aka Garbage, and Ojyama) to the opponent. The more beans that link up, the more garbage is sent. Players may also activate step chains (aka Rensa) so that even more garbage is scored. The game is decided when the third column from the left is piled to the top.