Introduction

Product codes are used to assign unique numbers to software, which are constant across revisions of a particular title. Several different systems were used for Sega 8-bit software by the various companies involved. Most also reveal some information about the title.

n is used to denote a decimal digit placeholder.

SG-1000 and SC-3000

Sega

TypeProduct codeKnown range
Sega MyCard (game)C-nn05-72
Game cartridgeG-10nn01-46
BASIC cartridgeB-nn30-50
Educational cartridgeE-1nn01-19

Some games were releasesd in both MyCard and cartridge form, with the same number on both: for example, Champion Boxing has codes C-33 and G-1033.

Miscellaneous

TypeProduct codeKnown range
Tsukuda Othello Multivision cartridge (Japan)OM-Gnnn001-008
John Sands tape (Australia)STnnnn 

Master System

Sega (Japan)

TypeProduct codeKnown range
My CardC-5nn01-19
Game cartridgeG-13nn01-73

Sega (Export)

TypeProduct codeKnown range
The Sega Card (32KB)4nnn001-084
The Sega Cartridge (32KB)45nn01-84
The Mega Cartridge (128KB)5nnn051-084, 100-123
The Mega Plus Cartridge (128KB+RAM)55nn00-01
The Combo Cartridge6nnn001-003, 080-081
The Two-Mega Cartridge (256KB)7nnn001-080, 100-124
The Two-Mega Plus Cartridge (256KB+RAM)75nn000-006
The 3-Dimensional Mega Cartridge (128/256KB)8nnn001-008
The Four-Mega Cartridge (512KB)9nnn001-034
The Four-Mega Plus Cartridge (512KB+RAM)95nn00-01

Some European releases have a numerical suffix describing the country/countries of release. Country-specific codes are usually only used where box art is localised for that country.

SuffixRegion
-05UK / Australia
-06Spain
-09France
-13Italy
-18Germany
-50Europe

Third-party (Export)

These generally match Sega's export numbering system, but are prefixed by the digit 2; sometimes this is additionally prefixed by MK-, eg. MK-29029 (Mortal Kombat II).

TypeProduct codeKnown range
The Mega Cartridge (128KB)5nnn001-014
The Two-Mega Cartridge (256KB)7nnn005-082
The Four-Mega Cartridge (512KB)9nnn001-035

The region suffix described above for the Sega (Export) codes also applies here.

Third-party (USA)

Some US releases used their own numbering systems:

TypeProduct codeKnown range
Parker Bros43n05-7
Activision500n1-4
Tengen3010nn-016026-40

Tectoy (Brazil)

TypeProduct codeKnown range
32KB cartridge021.nn0 
128KB cartridge023.nn0 
256KB cartridge025.nn0
026.nn0
027.nn0
 
512KB cartridge028.nn0 
512KB+RAM cartridge029.nn0 
800KB/1MB cartridge030.nn0 

There may be inconsistencies in these, more checking is needed.

Miscellaneous

TypeProduct codeKnown range
Salio Silver cartridge (Japan)Silver-nnn000-001

Game Gear

TypeProduct codeKnown range
Sega of America2nnn 
Sega of JapanG-3nnn101-103 (32KB)
201-229 (128KB)
301-387 (256KB+)
401-436 (128KB+)
Third-partyT-ddnnn
T-dddnnn
See below

The first two or three digits in third-party codes denote the developer:

DeveloperCode
Taito11
Namco14
SunSoft15
Micronet22
Vic Tokai23
NCS25
Sigma Enterprises26
Genki28
Wolf Team32
Kaneko33
Sanritsu,SIMS44
Game Arts/Studio Alex45
Tengen,Time Warner48
Telenet Japan49
EA50
SystemSoft51
Microcabin52
Riverhill Soft53
ASCII Corp.54
Victor/Loriciel/Infogrames60
Tatsuya Egama/Syueisya/Toei Anumaition/Tsukuda Ideal65
Compile66
GRI68
Virgin70
US Gold79
Acclaim81
GameTek83
Mindscape87
Domark88
Sony93
THQ100
SNK103
Microprose104
Disney112
Beam Software P/L125
Bandai133
Viacom139
Infocom/Gremlin149
Infogrames151
Technos Japan Corp.154

Some of these need further comparison to other systems (eg. Mega Drive) to determine which of the credited companies was the licencee, because insufficient Game Gear evidence is available. Note that this table is missing evidence from any software releases since about 1999.




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