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Bonanza Bros (US, Floppy DS3-5000-07d? Based)

Game Information
manufacturer Sega
year 1990
Cloned by bnzabrosj
genre Platform
downloads 134
Screenshots
bnzabros title
bnzabros snap
bnzabros select
bnzabros gameover
bnzabros scores
Download Details
split set bnzabros.zip 923.80KiB
merged set bnzabros.7z 594.08KiB
standalone set bnzabros.7z 574.42KiB
Game Details

Sega System 24 disk published 34 years ago:

Bonanza Bros. (c) 1990 Sega.

Bonanza Bros. is a strategic platform shoot-em-up with one or two players taking on the roles of Robo and Mobo, two cat-burgling brothers who must negotiate scrolling platform-based levels and steal a set number of valuable items, before making their way to the roof to escape in a waiting airship. The location of the items is highlighted on a cut-away map displayed in the middle of the screen and each stage must be completed within a set time limit.

The game's 2D platforms are displayed using forced-perspective 3D, this allows both the players and enemies to move between the front and back of the platforms. The game's enemies have a limited field of vision, making it possible for players to hide from them by ducking into alcoves, stairwells and other background scenery. Players can walk, jump and shoot and enemies can be neutralized either by being shot, or by slamming doors against them. They will only remain stunned for a few seconds, however.

"Bonanza Bros." promotes the use of stealth, with enemies alerted by sounds or by players entering their field of vision. Once alerted, enemies will either hide, call for help or fire at the players. On some stages, hazardous items litter the ground that should either be avoided or jumped over. These include discarded Coke cans, banana skins and garden rakes and if players walk into them, they will slip and fall, creating a noise and alerting nearby guards to their presence. Some guards carry a riot shield and can only be hit when they are walking away from the player. If players get shot too many times, or if they fail to steal all treasure items and reach the escape point within the time limit, the brothers end up in jail and it's game over.

The game has a total of twelve stages, with extra bonus stages appearing after every second level. These bonus rounds take place on a single screen and the aim is to collect treasure items from a number of ledges within a set time limit. Search lights constantly move around the screen and if one touches the player, the bonus round ends. Each bonus screen has alcoves that players can hide in to evade the search lights.

Each of the game's twelve stages is set in a different building. The stages are:
* BANK
* MILLIONAIRE'S MANSION
* CASINO
* MINT
* DEPARTMENT STORE
* GOLD MINE
* JEWELLERY STORE
* LABORATORY
* DELUXE LINER (YACHT)
* ANTIQUE SHOP
* ART MUSEUM
* PYRAMID

- TECHNICAL -

Runs on the Sega "System 24" hardware.

Players: 2
Control: 8-way joystick
Buttons: 3

- TRIVIA -

Bonanza Bros. was released in June 1990.

- UPDATES -

The US version differs from other territories with the addition of the "Winners Don't Use Drugs" screen displayed at the start of a game.

- PORTS -

* CONSOLES:
[EU] Sega Master System (1990) "Bonanza Bros. [Model 7073]"
Sega Master System [BR] (1991) by Tec Toy
[EU] Sega Mega Drive (1991) "Bonanza Bros. [Model 1124-50]"
Sega Mega Drive [KO] (1991) "Bonanza Bros. [Model GM 4045 JT]" by Samsung
Sega Mega Drive [BR] (1991) by Tec Toy
[US] Sega Genesis (may.16, 1991) "Bonanza Bros. [Model 1124]"
[JP] Sega Mega Drive (may.17, 1991) "Bonanza Bros. [Model G-4046]"
NEC PC-Engine Super CD-ROMĀ² [JP] (jul.31, 1992) "Bonanza Bros. [Model NAPR-2028]"
[JP] Sony PS2 (jan.15, 2004) "Sega Ages 2500 Vol. 6 : Bonanza Brothers [Model SLPM-62433]"

* COMPUTERS:
[EU] Amstrad CPC (1992)
[EU] Atari ST (1991)
[EU] Commodore Amiga (1991)
[EU] Sinclair ZX Spectrum (1991)
[JP] Sharp X68000 (sept.10, 1991)
Driver Details
source sega/segas24.cpp
driver status good
emulation status good
save states unsupported
channels 2
Screen Details
display screen
type raster
orientation horizontal
width 496
height 384
refresh rate 57.52hz
Input Details
player: 1
type joy
directions 8way
buttons 3way
player: 2
type joy
directions 8way
buttons 3way
Chipset Details
Motorola MC68000 10.00mhz
Motorola MC68000 10.00mhz
Speaker present
Speaker present
YM2151 OPM 4.00mhz
8-Bit R-2R DAC present
ROM Details
name size crc
epr-12187.ic2 128.00KiB e83783f3
epr-12186.ic1 128.00KiB ce76319d
mpr-13188-h.2 512.00KiB d3802294
mpr-13187-h.1 512.00KiB e3d8c5f7
mpr-13190.4 256.00KiB 0b4df388
mpr-13189.3 256.00KiB 5ea5a2f3
ds3-5000-07d.img 1.76MiB 2e70251f