Ci-dessous se trouve la liste des compagnies avec au moins un jeu développé ou édité sur MegaDrive/MegaCD, avec une description, sa nationalité, son site Web ainsi que son statut (actif ou mort).
3D Realms Entertainment
A-Wave
Abel
Able
Absolute Entertainment
Access Software
Acclaim Entertainment
Accolade
Acid Software
ACME Interactive
Active Entertainment
Activision
ADK (Alpha Denshi)
Adrenalin Entertainment
Agetec
Agrex
Aisystem Tokyo
AKI
Al Baker & Associates
Alchemist
Alexandria Incorporated
Alfa System
Almanic
Alternative Reality Technologies
Altron
AM1
AM2
AM5 (UGA)
AM7
American Laser Games Inc.
American Softworks Corporation
Amusement Vision
Amuze
Anchor
Ancient
Anco Software
Appaloosa Interactive
Aquaplus
Arc Developments
Arc System Works
Archer MacLean
Arena Entertainment
Argonaut
Arnowitz Studios
Arsys Software
Artdink
Artech Studios
Asba
ASC Games
ASCII Entertainment
Asmik Corporation
Aspect
Atari Games
ATD
Athena
Atlus
Atmark
Atod
Audiogenic Software
AV Artisan
Avalanche
Awesome Developments
Ballistic
Bally/Midway
Bandai
Banpresto
Beam Software
Big Bang Software
Big Red Software
Bignet USA Inc.
Bimboosoft
BioWare
Bit Managers
Bitmap Brothers
Bitmasters
BITS Corporation
Bits Laboratory
Bits of Magic
Bizarre Creations
Black Pearl Software
Blaze
bleem
Blitz Games
Blizzard Entertainment
Blue Planet
Blue Sphere
Blue Turtle
BlueSky
Bottom's Up
Brian A. Rice, Inc
Broccoli
Brøderbund
BudgeCo
Buena Vista Interactive
Bullet Proof
Bullfrog
Byte Size Sound
C&E Inc.
C.Y.X.
California Dreams
Capcom
CapDisc
Caramel Pot
Ceris Software
Chris Gray Enterprises
Chuanpu Technologies
City Man Technologies
Climax Entertainment
Climax Graphics
Climax Group
Clockwork Games
Coconuts Japan
Code Monkeys
Codemasters
Compile
Compton's New Media
Condor
Core Design
Coreland
Crave
CRC Research Institute
Creative Capers
CRI
Crimson
Criteron Studios
Crossnet
Cryo
Cryptic Allusion
Crystal Dynamics
Cyber Front
D3Publisher
Daikoku
DAPS
DarkWorks
Data Design
Data East
Data West
Datam Polystar
Davidson & Associated
DaZZ
Deep Water
Delphine Software
Denpa Shinbunsha
Designer Software
Dice
Digital Developments
Digital Eclipse
Digital Pictures
Dini and Dini Productions
Discovery Software
Disney Interactive
DMA Design
Domark
Dragons Team
Dream Gaurdians
Dreamworks
Drew Pictures
Dry Ice
Dynamic Planning
Dynamix
F&C
Face
Factor 5
Falcom
Far Sight Technologies
Favorite
First Star Software
Flashback
Flashpoint Productions
Flying Edge
Fog
FortyFive
Fox Interactive
Freestyle
Freetron co.
From Software
Front Street Publishing (U.S. Gold)
Frontier Developments
Frontwing
FTL
Fuji Television Network
Fujicom
Funcom
FV Ring
G-Rev
G-Sat
Game Arts
Game Freak Inc.
Game Refuge
GAME Studios
GameTek
Gamevillage
Gamtec
Gathering of Developers
Gau Entertainment
General Entertainment
GeneX
Genki
Givro
Global A
GN Soft
GOAT Store Publishing
Good Deal Games
Graftgold
Granite Bay Software
Graymater
Gremlin Interactive
Group SNE
GTE Vantage
H.I.C.
Hackberry
Hammond & Leyland
HarmlessLion
Hasbro Interactive
Havas
Headgames
Heavy Iron
Hertz
Hi Tech Expressions
HiCOM
High Score Productions
High Voltage Software
Hitmaker
Hitmen Productions
Home Data
Hook Software
Hookstone
Hot-B
Hothouse Creations
Hudson Soft
HUMAN
Hunex
Icom Simulations
ID Software
Idea Factory
IE Productions
IGS
Iguana Entertainment
Illusion Soft
Illusion Softworks
Image Works
Images Software
Imagineer
Imagineering
Imagitec Design
In Utero
Infinite Laser Dog
Infocom
Infogrames
Innerloop
Innerprise Software
Interact
Interactive Designs
Interplay
Interstate
Irem
ISAO
ISCO
M2
Ma-Ba
Majesco
Malibu Interactive
Marionnette
Marsu
Marvelous Entertainment
Masaya
Mass Media
Mathematiques Appliquees
Mattel
Maxbet
Maxis
Mebius
Media Entertainment
Media Factory
Mediaworks
Melbourne House
Mentrix Software
Metro3D
Micro Cabin
Micro World
Micronet Co. Ltd
Microprose
Microsmiths
Midway
MIL-CD
Milestone
Millenium Interactive
Minato Giken
Mindscape
Ming
Mirage
Mirrorsoft
MotiveTime Limited
Mucky Foot
Multimedia Creator Network
Namco
Namcot
Natsume
Naughty Dog
Naxat Soft
NEC Interchannel
Neon
NetVillage
Neversoft
New World Computing
Nexa Corporation
Nextech
Nextgrand LTD
NG:DEV.TEAM
Nichibutsu
Nihon Bussan
Nihon Falcom
Nihon Telenet
Nippon Computer System (NCS)
NMS Software
No Cliché
Noisa
Novotrade
Now Production
Nu FX
Nuvision
Ocean
office I.
OlderGames
Omiya Soft
Opera House
Origin
Overworks
Pacific Software
Pajamas Soft
Palsoft
Panasonic
Pandora Box
Panther Software
Papyrus Design Group
Paradox Development
Park Place Productions
Parker Brothers
PCM
Pelican
Perfect Entertainment
Pione Soft
Pioneer
Pitbull Syndicate
Playmates Interactive
Playmore
Polydor
Polygames
Pony Canyon
Popcorn Soft
Princess Soft
Probe
Psikyo
Psygnosis
Pulse
Punk Development
Radiance Software
Radical Entertainment
Rage Software Ltd.
Random House
Rare
Raster
Rastersoft
RayLand
RazorSoft
Readysoft
Realtec
Realtime Associates
RealVision
Recreational Brainware
Red
Red Storm
redspotgames
Reflections
Reindeer
Renegade Software
Reno (Nihon Telenet)
Renovation
Riedel Software
Ringler Studios
Riot
Riot (Nihon Telenet)
Ripcord
Rit's
Riverhill Soft
Rocket Science Games
Rockstar
Runecraft
Rutubo Games
S F Software
Saddleback Graphics
Saga Planets
Sage's Creation
Sales Curve
Sammy
Samsung
Sankindo
Sanritsu
SCEE Studio Cambridge
SCI
Sculptured Software
Secret Level Games
SEGA
Sega AM2
Sega AM3
Sega AM6 (CS1)
Sega AM7 (CS2)
Sega Development Division #2
Sega Development Division #3
Sega Falcom
Sega Interactive Development
Sega Multimedia Studio
Sega of America
Sega Ozisoft
Sega Rosso
Sega Technical Institute
SegaToys
Seibu Kaihatsu
Seismic
Sensible Software
Shaba Games
Shangri-La
Sheffield House
Shimada Kikaku
Shiny Entertainment
Shoeisha
Shogakukan Production
Shouei
Sierra
Sierra On-Line
SIGMA
Silicon & Synapse
Silicon Dreams
Simon and Schuster
SIMS
Skonec
Smilebit
Smoking Gun Productions
SNK
Softmax
Softvision
Software Creations Cartridge
Software Toolworks
Sonic Software Planning
Sonic Team
Sony Imagesoft
Sony Music Entertainment
Spectrum Holobyte
Spidersoft
Spike
Spiral House
Sprytes Ltd.
SSI
Starfish
Stargate Films
Sterling Silver Software
Sting
Stormfront Studios
Studio 3DO
Studio Alex
Studio e go!
Studio Line
Studio Mebius
Studio Wonder Effect
Success
Sunrise Interactive
Sunset Entertainment
SUNSOFT
Super Chip
Super Fighter Team
SuperSonic Software
Sur De Wave
SymbioPlanning
Syrox Developments
Syscom
System Sacom
SystemSoft
T&E Soft
TAD
Taito
TAKARA
Take 2 Interactive
Takumi
Takuyo
Talonsoft
Taoplan
TBS
Team 17
Team Bubsy
Team Ninja
Tec Toy
Technopop
TECHNOS Japan
Technosoft
Tecmagik
Tecmo
Teeny Weeny Games
Telenet
Telstar F & G
Tengen
Teque London
Terminal Reality
The Britt Allcroft Company
The Cartoon Mavericks (The Kremlin)
The Kremlin
Thinking Rabbit
Third Law
THQ
Three-Sixty Pacific Inc.
Tiburon
Tiertex
Time Warner Interactive
Titus
Toaplan
Toei
ToeJam & Earl Productions
TOHO
Toka
Tommy
Toshiba EMI
Touchstone
Tradewest
Transpegasus
Traveller's Tales
Treasure
Treco
Tremor
Treyarch
Triangle Service
Tsuburaya Prod.
Tsukuda Original
TV-Asahi