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Dr. Robotnik's Mean Bean Machine (Dr.エッグマンのミ一ンマシ一ン[1] Dokutā Egguman no mi ichi nmashi ichi n?, lit. "Dr. Eggman's Mean Bean Machine") is a puzzle video game in the Sonic the Hedgehog series developed by Compile and published by Sega. A loose adaptation of Dr. Robotnik's Mean Bean Machine for the Sega Mega Drive, it was released for the Sega Game Gear and Master System in late-1993 and 1994. Like its Sega Mega Drive counterpart, the game is based on the Game Gear port of Sega's C-2 version of the Japanese puzzle game Puyo Puyo.

The game's story and gameplay are very similar to its Sega Mega Drive counterpart, but with the version-exclusive Puzzle Mode. Similarly, the 8-bit version of Dr. Robotnik's Mean Bean Machine has also received numerous ports and re-releases.


Spoiler warning: Plot, ending details or any kind of information follow.

At his fortress, Dr. Robotnik shows his minions, Scratch and Grounder, the Mean Bean-Steaming Machine, a device he has created that allows him to turn the beans of Beanville into robots, so that he can get rid of all music and fun on Mobius. Robotnik then orders his minions to catch more beans and bring them into the Mean Bean-Steaming Machine.

It is in this moment where the player attacks Robotnik's dungeons where he keeps his captured beans. However, these dungeons are guarded by Robotnik's henchbots, who start to attack the playable character. After defeating the henchbots, Robotnik himself faces the player, though he is defeated anyway. After the doctor's defeat, the Mean Bean-Steaming Machine is destroyed and all beans are freed.


Dr. Robotnik's Mean Bean Machine is a puzzle video game, which plays similar to Puyo Puyo. The gameplay takes place in two different boards named "dungeons."[2] The left dungeon is controlled by the player, while the right one is controlled by either a second player or an AI.

The main goal of Dr. Robotnik's Mean Bean Machine is to fill the opponent's dungeon so that they cannot play anymore. Each player will be given two beans in pairs, which will fall until they touch ground. Beans come in different colors, which are red, yellow, green, blue, and pink. When four beans of the same color touch each other, they will disappear and go to the opponent's dungeon in the form of refugee beans, which can only be disposed of by making neighboring groups of colored beans disappear. The player can also make chain reactions to make more beans disappear, and as such drop more refugee beans in the opponent's dungeon. Once one of the players is unable to drop more beans, the other player will win.


Button formation Movement
Controlpadds.png left/right Move Beans
Game Gear I Button.png/Game Gear II Button.png Rotate Beans
Controlpadds.png down Drop Beans faster


Non-playable characters


  1. Arms
  2. Frankly
  3. Humpty
  4. Coconuts
  5. Davy Sprocket
  6. Dynamight
  7. Skweel
  8. Grounder
  9. Spike
  10. Sir Ffuzzy-Logik
  11. Dragon Breath
  12. Scratch
  13. Dr. Robotnik


Scenario Mode

Scenario Mode works as the game's story mode. It is where the player fights against Robotnik's henchbots. This mode is for one player only.

Scenario Mode is composed on thirteen stages, each of them having the player fighting against an AI. If the player managed to win the stage, they will mode to the following one. However, if they lose, they will be taken to a Continue screen, where they will have ten seconds to decide whether of not to restart the stage. The opponents featured in this mode are as follows:

Stage no. Opponent Image Puyo Puyo
1 Arms Arms-8-Bit-Potrait.png Draco Centauros N/A
2 Frankly Frankly-8-Bit-Potrait.png Suketoudara
Zoh Daimaoh
3 Humpty Humpty-8-Bit-Potrait.png Sukiyapodes Yellow-Bean-8-bit.pngBlue-Bean-8-bit.pngPink-Bean-8-bit.pngBlue-Bean-8-bit.png
4 Coconuts Coconuts-8-Bit-Potrait.png Harpy Red-Bean-8-bit.pngPink-Bean-8-bit.pngRefugee-Bean-8-bit.pngGreen-Bean-8-bit.png
5 Davy Sprocket Davey-Sprocket-8-Bit-Potrait.png Sasoriman Blue-Bean-8-bit.pngRefugee-Bean-8-bit.pngRefugee-Bean-8-bit.pngHas-Bean-8-bit.png
6 Skweel Skweel-8-Bit-Potrait.png Panotty Has-Bean-8-bit.pngPink-Bean-8-bit.pngRefugee-Bean-8-bit.pngHas-Bean-8-bit.png
7 Dynamight Dynamight-8-Bit-Potrait.png Zombie Blue-Bean-8-bit.pngRed-Bean-8-bit.pngRefugee-Bean-8-bit.pngHas-Bean-8-bit.png
8 Grounder Grounder-8-Bit-Potrait.png Witch Has-Bean-8-bit.pngPink-Bean-8-bit.pngYellow-Bean-8-bit.pngBlue-Bean-8-bit.png
9 Spike Spike-8-Bit-Potrait.png Zoh Daimaoh Blue-Bean-8-bit.pngHas-Bean-8-bit.pngYellow-Bean-8-bit.pngPink-Bean-8-bit.png
10 Sir Ffuzzy-Logik Sir-Ffuzzy-Logik-8-Bit-Potrait.png Schezo Wegey Blue-Bean-8-bit.pngYellow-Bean-8-bit.pngRed-Bean-8-bit.pngGreen-Bean-8-bit.png
11 Dragon Breath Dragon-Breath-8-Bit-Potrait.png Minotaur Pink-Bean-8-bit.pngBlue-Bean-8-bit.pngRefugee-Bean-8-bit.pngYellow-Bean-8-bit.png
12 Scratch Scratch-8-Bit-Potrait.png Rulue Pink-Bean-8-bit.pngBlue-Bean-8-bit.pngRed-Bean-8-bit.pngHas-Bean-8-bit.png
13 Dr. Robotnik Dr-Robotnik-8-Bit-Potrait.png Satan Yellow-Bean-8-bit.pngRed-Bean-8-bit.pngGreen-Bean-8-bit.pngBlue-Bean-8-bit.png

Gear-to-Gear Mode

Gear-to-Gear Mode is an extra competition mode of the game. It is played by having each player's Sega Game Gear connected with a Gear-to-Gear. Gear-to-Gear Mode is largely similar to Scenario Mode.

Puzzle Mode

The player solving the eighth lesson in Puzzle Mode.

Puzzle Mode is a mode exclusive to the 8-bit version of Dr. Robotnik's Mean Bean Machine. This mode consists of thirty challenges where the player must solve different puzzles using the game's core gameplay mechanics. When pausing a challenge, the player is given the option to quit the Puzzle Mode. Completing a challenge gives a password that lets the player continue from that point when restarting the game. Completing all thirty challenges makes the end credits roll. The list of lessons are as follows:

No. Lesson Password
1 Eliminate all red beans. N/A
2 Eliminate 10 beans at a time. Pink-Bean-8-bit.pngYellow-Bean-8-bit.pngHas-Bean-8-bit.pngHas-Bean-8-bit.png
3 Eliminate all red beans. Pink-Bean-8-bit.pngPink-Bean-8-bit.pngPink-Bean-8-bit.pngYellow-Bean-8-bit.png
4 Eliminate 3 waves of beans. Green-Bean-8-bit.pngGreen-Bean-8-bit.pngPink-Bean-8-bit.pngBlue-Bean-8-bit.png
5 Let 10 pairs drop in. Pink-Bean-8-bit.pngGreen-Bean-8-bit.pngYellow-Bean-8-bit.pngPink-Bean-8-bit.png
6 Eliminate 11 beans at a time. Blue-Bean-8-bit.pngGreen-Bean-8-bit.pngRed-Bean-8-bit.pngGreen-Bean-8-bit.png
7 Eliminate 4 waves of beans. Blue-Bean-8-bit.pngRed-Bean-8-bit.pngGreen-Bean-8-bit.pngPink-Bean-8-bit.png
8 Eliminate all beans. Blue-Bean-8-bit.pngGreen-Bean-8-bit.pngRefugee-Bean-8-bit.pngPink-Bean-8-bit.png
9 Eliminate all blue beans. Blue-Bean-8-bit.pngGreen-Bean-8-bit.pngRefugee-Bean-8-bit.pngPink-Bean-8-bit.png
10 Eliminate all beans. Refugee-Bean-8-bit.pngHas-Bean-8-bit.pngRefugee-Bean-8-bit.pngHas-Bean-8-bit.png
11 Eliminate 5 waves of beans. Has-Bean-8-bit.pngBlue-Bean-8-bit.pngRed-Bean-8-bit.pngHas-Bean-8-bit.png
12 Eliminate all beans. Pink-Bean-8-bit.pngHas-Bean-8-bit.pngYellow-Bean-8-bit.pngGreen-Bean-8-bit.png
13 Eliminate 4 waves of beans. Yellow-Bean-8-bit.pngPink-Bean-8-bit.pngYellow-Bean-8-bit.pngHas-Bean-8-bit.png
14 Eliminate refugee beans. Yellow-Bean-8-bit.pngRefugee-Bean-8-bit.pngRefugee-Bean-8-bit.pngPink-Bean-8-bit.png
15 Eliminate 5 waves of beans. Red-Bean-8-bit.pngPink-Bean-8-bit.pngYellow-Bean-8-bit.pngBlue-Bean-8-bit.png
16 Eliminate 9 beans at a time. Green-Bean-8-bit.pngRed-Bean-8-bit.pngGreen-Bean-8-bit.pngHas-Bean-8-bit.png
17 Eliminate 4 waves of beans. Refugee-Bean-8-bit.pngHas-Bean-8-bit.pngYellow-Bean-8-bit.pngBlue-Bean-8-bit.png
18 Eliminate 5 waves of beans. Yellow-Bean-8-bit.pngHas-Bean-8-bit.pngRed-Bean-8-bit.pngBlue-Bean-8-bit.png
19 Eliminate all red beans. Pink-Bean-8-bit.pngRed-Bean-8-bit.pngHas-Bean-8-bit.pngBlue-Bean-8-bit.png
20 Eliminate all beans. Red-Bean-8-bit.pngYellow-Bean-8-bit.pngBlue-Bean-8-bit.pngPink-Bean-8-bit.png
21 Eliminate 18 waves of beans. Red-Bean-8-bit.pngBlue-Bean-8-bit.pngYellow-Bean-8-bit.pngGreen-Bean-8-bit.png
22 Eliminate all red beans. Yellow-Bean-8-bit.pngGreen-Bean-8-bit.pngRed-Bean-8-bit.pngRed-Bean-8-bit.png
23 Eliminate all red beans. Red-Bean-8-bit.pngBlue-Bean-8-bit.pngRed-Bean-8-bit.pngYellow-Bean-8-bit.png
24 Eliminate 11 waves of beans. Refugee-Bean-8-bit.pngGreen-Bean-8-bit.pngRed-Bean-8-bit.pngYellow-Bean-8-bit.png
25 Eliminate 18 beans at a time. Red-Bean-8-bit.pngYellow-Bean-8-bit.pngHas-Bean-8-bit.pngPink-Bean-8-bit.png
26 Eliminate 18 beans at a time. Blue-Bean-8-bit.pngRefugee-Bean-8-bit.pngRed-Bean-8-bit.pngYellow-Bean-8-bit.png
27 Eliminate all blue beans. Refugee-Bean-8-bit.pngBlue-Bean-8-bit.pngHas-Bean-8-bit.pngGreen-Bean-8-bit.png
28 Eliminate 5 waves of beans. Refugee-Bean-8-bit.pngYellow-Bean-8-bit.pngYellow-Bean-8-bit.pngPink-Bean-8-bit.png
29 Eliminate 5 waves of beans. Blue-Bean-8-bit.pngPink-Bean-8-bit.pngRed-Bean-8-bit.pngHas-Bean-8-bit.png
30 Eliminate 7 waves of beans. Blue-Bean-8-bit.pngYellow-Bean-8-bit.pngPink-Bean-8-bit.pngHas-Bean-8-bit.png
N/A Ending Red-Bean-8-bit.pngGreen-Bean-8-bit.pngHas-Bean-8-bit.pngHas-Bean-8-bit.png

Version differences

  • Slight visual changes are made in the Sega Master System version. This includes wider menu backgrounds and extended cutscene images.
  • The machinery-themed tiles featured in Stages 8-13 are replaced with the standard rock tiles in the Sega Master System.
  • The credits screen in the Game Gear version has a blue background, while the Master System version has a black background.


Review scores
Publication Score
GamePro 16.5/20 (GG)[3]
Nintendo World Report 8/10 (3DS)[4]
Sega Magazine 92% (GG)[5]

Much like its 16-bit counterpart, Dr. Robotnik's Mean Bean Machine received positive reviews. Sega Magazine praised the Sega Game Gear version for its presentation, playability and challenge, and concluding the game as being "brilliantly executed and great fun to play."[5] GamePro described it as absorbing and complex, and pointed it out for having easy controls to use and learn.[3]

For the game's Nintendo 3DS re-release, Neal Ronaghan of Nintendo World Report gave the Game Gear version an 8 out of 10, praising its addicting and fun puzzle gameplay, but also noted that it can be hard to play in its original resolution.[4] For the game's multiplayer mode, Ron DelVillano of Nintendo Life stated that "sharing the frustration among pals can be fun, and there's little more satisfying than performing a crushing combo that subsequently dumps a bunch of beans into your friend's column, then laughing right in their face as you parade in victory." He criticized the game's graphics for being outdated, but also praised the gameplay for remaining fresh nearly 20 years after its initial release.[6]


Dr. Robotnik's Mean Bean Machine on Sega Mobile.

The Game Gear version of Dr. Robotnik's Mean Bean Machine has been included as an additional game in Sonic Adventure DX: Director's Cut (2003) which can be unlocked after collecting 130 Emblems and clearing ten missions. The Game Gear version of the game is also included in Sonic Mega Collection Plus (2004) and the Plug-and-Play game console called Freetron’s FunPlay 20-in-1, the latter of which was released in 2009 by Atgames.

In 2003, Sega of America released the Game Gear version of the game for mobile platforms under the Sega Mobile label. Also, in 2013, the Game Gear version was re-released on the Virtual Console for the Nintendo 3DS at the price of 300 points.[7]


  • Producers: Max Taylor, Masamitsu Niitani (Moo Niitani)
  • Directors: Katsuhiro Hasegawa (Hase), Masanobu Tsukamoto (M. Tsukamoto)
  • Planner: Kazu&Kozu
  • Programmers: Tadashi Eda (E.D.A.), Wahaha, Nattoh
  • Designers: Hisato Fukumoto (7LY Big King), Nobuhiko Honda (Noburin), AAA↲, Takako Kawaguchi (Choko), U·D·K, Max Taylor, Brian Ransom, Dave Albert, Tokifuru Morita
  • Sound programmers: Masayuki Nagao (Nagao'N'Gee), Masanori Hikichi (Hiki), Haruyo Oguro (Lotty), David Javelosa
  • Special thanks: Tsuka-P, 16Bit Staff

©1993 Sega
©1993 Compile


  1. Sonic Team (18 December 2003). Sonic Adventure Deluxe (Japanese). PC. Sega. Area/level: プチグームコレクシヨン.
  2. Dr. Robotnik's Mean Bean Machine (Sega Game Gear) United States instruction booklet, pg. 6.
  3. 3.0 3.1 Earth Angel (January 1994). "Dr. Robotnik*s Mean Bean Machine". GamePro (55): 152. Archived from the original. Retrieved on 7 September 2016.
  4. 4.0 4.1 Ronaghan, Neal (18 June 2013). Dr. Robotnik's Mean Bean Machine. Nintendo World Report. Retrieved on 7 September 2016.
  5. 5.0 5.1 Game Gear Review: Dr. Robotnik's Mean Bean Machine 106-107 (January 1994). Retrieved on 7 September 2016.
  6. DelVillano, Ron (18 January 2013). Review: Dr Robotnik's Mean Bean Machine (3DS eShop / Game Gear). Nintendo Life. Retrieved on 7 September 2016.
  7. Four New Game Gear Titles for the Nintendo 3DS eShop. Sega Blog. Sega (13 June 2013). Archived from the original on 18 June 2013. Retrieved on 7 September 2016.

External links

Sonic the Hedgehog handheld games
Sonic the Hedgehog spin-off games