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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 Leaving via blimp
Bonanza Bros. Amiga Bagged all treasures in the building, and am ready to proceed
Bonanza Bros. Amiga Stage 02: Mr. Big's Mansion
Bonanza Bros. Amiga Stage 08: Mr. Big's Yacht

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

Amiga Action Jan, 1992 90 out of 100 90
Computer and Video Games (CVG) Feb, 1992 82 out of 100 82
Amiga Power Jan, 1992 81 out of 100 81
The One for Amiga Games Feb, 1992 80 out of 100 80
Datormagazin Apr 23, 1992 75 out of 100 75
Amiga Format Feb, 1992 70 out of 100 70
Pelit Feb, 1992 65 out of 100 65
Amiga Joker Mar, 1992 42 out of 100 42
Tilt Apr, 1992 8 out of 20 40


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Katakis | カタキス (39490) added Bonanza Bros. (Amiga) on Mar 08, 2004
Other platforms contributed by Corn Popper (69382), chirinea (44086), FatherJack (62757), Foxhack (24059), Kabushi (209401), Martin Smith (66801), Terok Nor (26691) and Katakis | カタキス (39490)