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Mobo and Robo Bonanza are enjoying their favorite television show when the picture crackles and a shadowy figure of a mysterious stranger appears on screen. This figure asks them to collect certain items that he has placed inside various buildings to test his security force. If they return the items successfully, Mobo and Robo will be rewarded. The two of them state that they will get the job done in just three minutes. However, little do they know that each building is packed with security guards who will raise the alarm if they are caught red-handed. Fortunately both Mobo and Robo are equipped with bullets that can knock the guards unconscious for a few seconds. An $100 reward will be given out if Mobo and Robo are apprehended.

As either Mobo or Robo, you must collect all the treasures before leaving the ten buildings and shoot any security guards that get in your way. Remember that you are under a time limit. An in-game map will help you locate the treasures. There is a bonus stage after three buildings, where the object is to collect the gold bars in a limited amount of time without one of the three spotlights shining on you. If it is possible, hide behind open doors. If you manage to get all the gold bars, 10,000 points is added to your score. There are three of these bonus stages, but each of them varies.


Bonanza Bros. Amiga Stage 05: Gold Mine
Bonanza Bros. Amstrad CPC Got all the treasures. Now ready to exit the level
Bonanza Bros. Commodore 64 Flying toward the second building
Bonanza Bros. Amiga The Boss asking Hobo and Mobo to steal treasures

Promo Images

Bonanza Bros. Screenshot
Bonanza Bros. Screenshot
Bonanza Bros. Screenshot
Bonanza Bros. Screenshot

Alternate Titles

  • "Bonanza Brothers " -- US Genesis title
  • "ボナンザ ブラザーズ" -- Japanese spelling

Part of the Following Group

User Reviews

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Critic Reviews

Sinclair User ZX Spectrum Jul, 1992 86 out of 100 86
Mean Machines Genesis Jul, 1991 82 out of 100 82
The One for Amiga Games Amiga Feb, 1992 80 out of 100 80
Commodore Format Commodore 64 May, 1992 77 out of 100 77
Computer and Video Games (CVG) Genesis Jul, 1991 65 out of 100 65
Pelit Amiga Feb, 1992 65 out of 100 65
The Virtual Console Archive Wii Mar, 2007 3 Stars3 Stars3 Stars3 Stars3 Stars 60
Nintendo Life Wii Jan 30, 2007 4 Stars4 Stars4 Stars4 Stars4 Stars4 Stars4 Stars4 Stars4 Stars4 Stars 40
Tilt Amiga Apr, 1992 8 out of 20 40
Play Time Commodore 64 Sep, 1992 32 out of 100 32


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Contributed to by Corn Popper (69322), chirinea (37600), FatherJack (58537), Foxhack (12598), Kabushi (163277), Martin Smith (62902), Terok Nor (23156) and *Katakis* (38210)