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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. Genesis Stage 4: Mint
Bonanza Bros. Genesis Robo get spring up into the air
Bonanza Bros. Genesis Trying to leave the building without the treasures, eh, Robo?
Bonanza Bros. Genesis Which way should Robo go? NE or SW?

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

Average, "strategy optional" platformer Andrew Fisher (583) 3.2 Stars3.2 Stars3.2 Stars3.2 Stars3.2 Stars

Critic Reviews

Mean Machines Jul, 1991 82 out of 100 82 Jan 26, 2005 8 out of 10 80
Raze Aug, 1991 80 out of 100 80
All Game Guide 1999 3.5 Stars3.5 Stars3.5 Stars3.5 Stars3.5 Stars 70
Power Play Aug, 1991 67 out of 100 67
Video Games Sep, 1991 66 out of 100 66
Computer and Video Games (CVG) Jul, 1991 65 out of 100 65 Feb 04, 2006 5.5 out of 10 55
ASM (Aktueller Software Markt) Jul, 1991 5.2 out of 12 43
Digital Press - Classic Video Games Dec 10, 2003 4 out of 10 40


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Katakis | カタキス (39490) added Bonanza Bros. (Genesis) on Mar 14, 2004
Other platforms contributed by Corn Popper (69379), chirinea (44330), FatherJack (62754), Foxhack (24434), Kabushi (209748), Martin Smith (66852), Terok Nor (26757) and Katakis | カタキス (39490)