Bonanza Bros.

n/a

System 24 Mega Drive Master System
Bonanza Bros.
System(s): Sega System 24, Sega Mega Drive, Sega Master System, Amiga, Amstrad CPC, Atari ST, Commodore 64, Super CD-ROM², X68000, ZX Spectrum, Virtual Console, Steam
Publisher: Sega U.S. Gold (UK) Erbe Software (ES) NEC Avenue Sharp
Developer: Sega R&D 1 Sega CS I.T.L Sega CS Twilight Twilight, Synergy, Tiertex SPS M2
Sound driver: SMPS Z80 (banked)
Genre: Action
Number of players: 1-2, 1
Official in-game languages: English Français Deutsch Español 日本語 English Français Deutsch
Release Date RRP Code JP 1990-06 ¥? ? US 1990 $? ? UK 199x £? ? JP 1991-05-17 ¥6,0006,000 G-4046 US 1991 1124 EU 1991-11 UK 1991-11 £34.9934.99 AU 199x BR 1991 KR 199x GM4045JG EU 1992-02 7073 PT 1991 MSJ7073 UK 1992-02 £29.9929.99 7073 AU 199x BR 1992-02 KR 199x GB2007JG UK 1991 UK 1991 ES (Cassette) 19xx UK (Cassette) 1992 UK (Cassette) 1992-05 £11.9911.99 UK (Disk) 1992-05 £15.9915.99 ES (Cassette) 1991 UK (Cassette) 1991-11 JP ▼ 2007-01-30 600pts600 US ▼ 2007-01-29 800pts800 EU ▼ 2007-02-02 800pts800 DE ▼ 2007-02-02 800pts800 AU ▼ 2007-02 800pts800 US ▼ 2010-09-13 $2.992.99 34284 EU ▼ 2010-09-13 €2.492.49 34284 DE ▼ 2010-09-13 €2.492.49 34284 UK ▼ 2010-09-13 £1.991.99 34284 AU ▼ 2010-09-13 $3.493.49 34284 US ▼ 2019-02-01 $0.990.99 34284 EU ▼ 2019-02-01 €0.990.99 34284 DE ▼ 2019-02-01 €0.990.99 34284 UK ▼ 2019-02-01 £0.790.79 34284 AU ▼ 2019-02-01 $1.351.35 34284 US ▼ 2019-02-01 $0.990.99 34284 EU ▼ 2019-02-01 €0.990.99 34284 DE ▼ 2019-02-01 €0.990.99 34284 UK ▼ 2019-02-01 £0.790.79 34284 AU ▼ 2019-02-01 $1.351.35 34284

Bonanza Bros. (ボナンザブラザーズ) is a 1990 arcade game developed by Sega for the Sega System 24 arcade platform.

Gameplay

In the game the player either controls Robo (red) or Mobo (blue), two thieves (or, in the case of the Western console versions, security testers) who must retrieve several objects scattered around levels while avoiding guards in a stealth-like fashion. Each player is armed with a firearm which can stun the guards for a short period of time, but it is also possible to hinder the guards' progress by using various parts of the scenery. It is a two-player game, and the screen is always split horizontally.

Stages

	Training Stage
	The training stage offers a brief introduction to gameplay, guiding the player through a couple of short floors with no impact to the player's score. This stage is optional in the arcade version and missing in many of the home ports.
	Stage 1: Bank
	Stage 2: Millionaire's Mansion
	Bonus Stage
	Stage 3: Casino
	Stage 4: Mint
	Stage 5: Department Store
	Stage 6: Underground Gold Bars
	Bonus Stage
	Stage 7: Jewelry Store
	Stage 8: Laboratory
	Stage 9: Deluxe Liner
	Stage 10: Antique Shop
	Bonus Stage
	Stage 11: Art Museum
	Stage 12: Pyramid

History

Legacy

Bonanza Bros. was ported to the Amiga, Atari ST, Commodore 64, Sega Master System and Sega Mega Drive in the coming years. PC Engine Super CD-ROM² and X68000 ports also existed exclusively in Japan, and Amstrad CPC and ZX Spectrum ports were released in Europe. Some westernised versions of the game call Robo and Mobo "Mike" and "Spike" respectively. Likewise North American and Brazilian copies of the game refer to the game as Bonanza Brothers rather than Bonanza Bros..

More recently, Bonanza Bros. was made available through the Wii's Virtual Console service, as well as being made part of the Sega Classics Collection and Sega Mega Drive Ultimate Collection compilations. As well as this, the game was unlockable within the Japanese version of Sonic Gems Collection, but was strangely removed from western releases of the game. It has also been ported to various mobile phones by SoftBank Mobile.

The arcade version of Bonanza Bros. was also included in volume 6 of the Sega Ages 2500 PlayStation 2 series. It is bundled with Puzzle & Action: Tant-R and its sequel, Puzzle & Action: Ichidant-R, both of which use a similar graphical style (as does Puzzle & Action: Treasure Hunt, which was not included).

A slot machine based on the game was released in 2010. The Bonanza Bros. (Robo and Mobo) are playable characters in Sonic & Sega All-Stars Racing.

Versions

Master System version

On the Master System, Bonanza Bros. lacks the two player co-operative mode, and so the game is always presented in full screen. Some minor elements are missing and the stage layout is slightly different in places. The difficulty is also dialed back - for example, there are no enemies with shields on the first stage.

Mega Drive version

Regional differences

In North American versions the plot was changed. Robo and Mobo became Mike and Spike. They are now famous investigators and were hired to test the security forces of the mysterious businessman's properties that have been targets for robbery recently. Both manual, box description and in-game intro text (scene which shows Bonanza Bros wanted poster was removed) were changed to reflect this.

Screenshot

Main article: Bonanza Bros./Comparisons.

Production credits

Master System version

• Original Planner: A Chan
• Planner: Pow
• Programmer: Kou
• Designer: Kan Chan
• Sound Composer: Bluetz Lee
• Special Thanks: Non Chan, M.A
• Presented by: Sega

Source:

In-game credits

PC Engine version

• Chief Programer: Masaaki Kudo
• Programer: Hiroji Sawai, Shu Hashimoto, You Ukita
• Graphics: Kenichi Nakada, Kenichi Tsubokura, Tomohiro Eguchi, Bird, Hakase, Kart, Naoto, Studio Crips
• Music: T's Music, S.S
• Support: Rei Nirezaki, Masami Takeda
• Special Thanks: Kani Moriya, Sister Miyuki, Hisako Oonari
• Director: Seiya Kari
• Producer: Toshio Tabeta
• Presented by: NEC Avenue

Source:

In-game credits

Amiga version

• Produced by: Twilight
• Written by: Andy Severn
• Music by: Mark Wilson
• Grafix by: Jabba

Source:

In-game credits

Digital manuals

• 

  Steam manual

Magazine articles

Main article: Bonanza Bros./Magazine articles.

Promotional material

Main article: Bonanza Bros./Promotional material.

Physical scans

System 24 version

Sega Retro Average
Publication Score Source

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Based on 0 review

Sega Retro Average
Publication Version Score Computer & Video Games (UK) 83

	83
Based on 1 review

Bonanza Bros.

System 24, US

System 24, JP
Instuction card(s)

Mega Drive version

Sega Retro Average

Publication Score Source ACE (UK) 75 Aktueller Software Markt (DE) 43 Beep! MegaDrive (JP) 73 Beep! MegaDrive (readers) (JP) 66 Computer & Video Games (UK) 65 Computer + Video Giochi (IT) 65 Mean Machines: The Essential Sega Guide (UK) 82 Famitsu (JP) 63 №132, [1] Games-X (UK) 80 №6 Hippon Super (JP) 70 №1991-06, p41 Hobby Consolas (ES) 89 Joystick (FR) 76 Sega Mega Drive Advanced Gaming (UK) 65 №5, p90 Mega (UK) 71 №9, p19 MegaTech (UK) 73 Mean Machines (UK) 82 Player One (FR) 40 Raze (UK) 80 Sega Power (UK) 80 Sega Power (UK) 59 №27, p46-47 Sega Pro (UK) 58 №18, p64 Sega Force (UK) 64 Video Games (DE) 66 Zzap! (IT) 90

	70
Based on 24 reviews

Sega Retro Average

Publication Version Score 1700 igr dlya Sega (RU) 50 1700 igr dlya Sega (RU) 30 ACE (UK) PAL 75 Aktueller Software Markt (DE) 43 Beep! MegaDrive (JP) NTSC-J 73 Console XS (UK) PAL 78 Cool Gamer (RU) 50 Computer & Video Games (UK) 65 Entsiklopediya luchshikh igr Sega. Vypusk 10 (RU) 60 Mean Machines: The Essential Sega Guide (UK) 82 Famitsu (JP) NTSC-J 63 Gamers (DE) 53 Games-X (UK) PAL 80 Hippon Super (JP) NTSC-J 70 Hobby Consolas (ES) 89 Joystick (FR) 76 Sega Mega Drive Advanced Gaming (UK) PAL 65 Mega Drive Fan (JP) NTSC-J 73 Mega (UK) PAL 71 Mega Force (FR) PAL 60 MegaTech (UK) 73 Mean Machines (UK) NTSC-J 82 Mean Machines Sega (UK) 73 Mean Machines Sega (UK) PAL 70 Player One (FR) 40 Power Play (DE) 67 Raze (UK) NTSC 80 Sega Power (UK) NTSC 75 Sega Power (UK) PAL 59 Sega Pro (UK) PAL 58 Sega Force (UK) PAL 64 Sega Saturn Magazine (JP) NTSC-J 66 Super Gaming (US) 33 Tricks 16 bit (RU) 59 Video Games (DE) 66 Zzap! (IT) 90

	66
Based on 36 reviews

Bonanza Bros.

Mega Drive, JP
Cover
Cart

Mega Drive, US
Cover
Cart Manual PCB

Mega Drive, EU
Cover
Cart Manual PCB

Mega Drive, AU

Mega Drive, BR
Cover
Cart

Mega Drive, KR
Cover
Cart

Master System version

Sega Retro Average
Publication Score Source Ação Games (BR) 88 Mean Machines: The Essential Sega Guide (UK) 57 Consoles + (FR) 50 Joystick (FR) 85 Mean Machines (UK) 57 Micromanía (segunda época) (ES) 75 №46, p32 Player One (FR) 65 Play Time (DE) 77 Sega Power (UK) 52 Sega Pro (UK) 75 Sega Pro (UK) 87 Sega Force (UK) 80 Video Games (DE) 62

	70
Based on 13 reviews

Sega Retro Average

Publication Version Score Ação Games (BR) 88 Consoles + (FR) PAL 50 Console XS (UK) PAL 90 Mean Machines: The Essential Sega Guide (UK) PAL 57 Game Power (IT) 73 Hobby Consolas (ES) PAL 89 Joypad (FR) 80 Joystick (FR) PAL 85 Mega Force (FR) PAL 60 Micromanía (segunda época) (ES) 75 Mean Machines (UK) PAL 57 Mean Machines Sega (UK) PAL 57 Player One (FR) PAL 65 Play Time (DE) 77 Sega Power (UK) PAL 52 Sega Pro (UK) PAL 75 Sega Pro (UK) PAL 90 Sega Force (UK) PAL 80 Video Games (DE) 62

	72
Based on 19 reviews

Bonanza Bros.

Master System, EU
Cover
Cart Manual

Master System, PT
Cover

Master System, BX†
Cover

Master System, AU
Cover
Cart

Master System, BR
Cover
Cart

Master System, KR
Cover
Cart

Mega-Tech version

Mega-Tech,
Cover

Amiga version

Sega Retro Average
Publication Score Source

{{{{{icon}}}|L}}
Based on 0 review

Sega Retro Average
Publication Version Score Amiga Power (UK) 81 Computer & Video Games (UK) 82

	82
Based on 2 reviews

Bonanza Bros.

Amiga, UK
Cover
Disk

Amstrad CPC version

Sega Retro Average
Publication Score Source

{{{{{icon}}}|L}}
Based on 0 review

Sega Retro Average
Publication Version Score CPC Attack! (UK) 66

	66
Based on 1 review

Bonanza Bros.

Amstrad CPC, UK

Amstrad CPC, ES
Cover

Atari ST version

Atari ST, UK
Disk

Commodore 64 version

Sega Retro Average
Publication Score Source

{{{{{icon}}}|L}}
Based on 0 review

Sega Retro Average
Publication Version Score Play Time (DE) 32 Zzap!64 (UK) 85 Zzap! (IT) 60

	59
Based on 3 reviews

Bonanza Bros.

Commodore 64, UK
Cassette

Super CD-ROM² version

Sega Retro Average
Publication Score Source GameFan (US) 83 Joypad (FR) 73

Template:PCECD	78
Based on 2 reviews

Sega Retro Average
Publication Version Score

Template:PCECD	N/A
Based on 0 reviews

Bonanza Bros.

Super CD-ROM², JP
Cover
Spinecard Disc File:Bonanza Bros PCE SCD-ROM2 JP Manual.PDF Manual File:BonanzaBros SuperCDROM2 JP RegCard.pdf Reg Card

X68000 version

X68000, JP
Cover
Manual

ZX Spectrum version

Sega Retro Average
Publication Score Source

{{{{{icon}}}|L}}
Based on 0 review

Sega Retro Average
Publication Version Score Sinclair User (UK) 86

	86
Based on 1 review

Bonanza Bros.

ZX Spectrum, UK

ZX Spectrum, ES
Cover

Technical information

ROM dump status

System	Hash	Size	Build Date	Source	Comments
✔	CRC32 20d1ad4c MD5 dc3847b07cd94a15b1b9e0fb2ff5db11 SHA-1 31c589bc0d1605502cdd04069dc4877811e84e58	512kB	1991-07	Cartridge (US/EU)
✔	CRC32 adf6476c MD5 9c6b56e9916aadee638f93c7f4bb1e20 SHA-1 ce46f2b53988f06e0bdfaad1b0dc3e9ca936e1e8	512kB	1991-07	Cartridge (JP/EU)	v00
✔	CRC32 c6aac589 MD5 acf4aa6aea84be72afaa1a86954b85cb SHA-1 f7313ecaf7143873597e3a6ebf58d542d06c3ef3	512kB	1991-07	Cartridge (JP/EU)	v01
?	CRC32 caea8002 MD5 e58f6f374b3405fd2a5e5b80e639a980 SHA-1 bbaedefa0bb489ece4bbd965f09a417be4b76cc7	256kB		Cartridge (EU)

External links

• Sega of Japan Virtual Console pages: Mega Drive
• Nintendo catalogue pages: US, UK, AU
• Bonanza Bros. on Steam

References

NEC Retro has more information related to Bonanza Bros.