Road Riot 4WD

From Sega Retro

RoadRiot4WD19930719 MD US Title.png

Road Riot 4WD
System(s): Sega Mega Drive
Publisher: Tengen[1]
Developer: Tengen[1]
Licensor: Atari Games
Planned release date(s): Autumn 1992[2], 1992-12[3], 1993-04[4], 1993-05[5], 1993-07[6], Autumn 1993[7]
Genre: Racing
Number of players: 1
Status of prototype(s): Prototypes dumped
Sound driver: Lisa's Sound Driver[8]

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Road Riot 4WD (ロードライアット4WD) is an arcade game released by Atari Games in 1991. A Sega Mega Drive port was demonstrated at Winter CES 1992 and Summer CES 1992 by Tengen but was cancelled. Details of the Mega Drive port are sketchy, however it is likely this would have been built in-house by Tengen (alongside an Atari Lynx version, also cancelled around the same time).

On the Mega Drive, Road Riot 4WD was forced to make severe graphical cutbacks over its arcade counterpart (which featured real-time sprite scaling at high frame rates). A leaked test report from September 1993 suggests the game was not reaching Sega of America's quality threshold, with Sega complaining about poor performance among other bugs. It is suspected Tengen could not overcome these issues and chose to cancel the game entirely, having been working on the title for over 18 months.

A port of Road Riot 4WD had been released for the Super Nintendo in late 1992, which opted to display the game permanently in split-screen mode and make serious cutbacks to suit the hardware. The SNES version was developed by Equilibrium for THQ (possibly due to a frosty relationship between Tengen and Nintendo of America) - there is no suggestion the two were involved in this Mega Drive version.

A prototype of the Mega Drive version with a 1992 copyright date was released by Hidden Palace on January 1, 2022. A later prototype from 1993 was found and released by DrBizz six months later on June 16, 2022.

Magazine articles

Sega Retro Average 
Publication Score Source
{{{{{icon}}}|L}} Division by zero.
Based on
0 review
Sega Retro Average 
Publication Version Score
1700 igr dlya Sega (RU)
Sega Mega Drive
Based on
1 review

Road Riot 4WD

Main article: Road Riot 4WD/Magazine articles.

Official documentation

Technical information

ROM dump status

System Hash Size Build Date Source Comments
Sega Mega Drive
CRC32 10c89166
MD5 a50543ef16cd674ef9f6a0c8796c98a1
SHA-1 dfba43d985fcfed0bd83588435088114cf16f379
1MB 1992-09 EPROM cartridge Download.svg (435 kB) (info) Page
Sega Mega Drive
CRC32 98e49e68
MD5 844ecc1545b141b15e35790933736da2
SHA-1 35dde53932ed6b6086c1416d45d95e772a8725dd
1MB 1993-07-19 EPROM cartridge Page