Dr. Robotnik's Mean Bean Machine/Hidden content

Unused Stages

The Lesson stages from Puyo Puyo were not cut from the game and can be cut by using PAR code 00BEFE:000? (? can be changed to 0-2).The tutorial text is glitchy and no music plays. Coconuts stands in stragne positions in the stage cutscenes. Defeating the third Lesson stage advances the player to the ending cutscene.[1]

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Sound Test

If playing the game on a Japanese Mega Drive via patch code a sound test will be available in the Options screen. The Game Genie code ADTT-AAAE will also make it appear.[2]

Unused Sound Effects

There are a few sound effects leftover from Puyo Puyo and can be heard in the sound test.[3]

• 0C - Stage Clear jingle
• 0F - "Brave". A remix of this is used in-game but this is the original arrangement.
• 10 - Theme of Puyo Puyo. A remix of this plays over the credits, but this is the original arrangement.
• 14 - Unknown. Perhaps a alternate warning music for the final stage.

Checksum Error

Puyo Puyo's checksum Error still exists in the game, and is triggered the same way.[4]