Dr. Robotnik's Mean Bean Machine is a version of Puyo Puyo with a storyline involving characters from the Sonic the Hedgehog games. The evil Dr. Robotnik decides to turn the citizens of Beanville into robots. It's up to the player to save them from their doom.
The game involves dropping pairs of beans into dungeons, trying to create groups of four in matching colors. The player must challenge Dr. Robotnik's robots to a battle and defeat them, with the ultimate goal of facing the Eggman himself.