Sega Mega Modem

From Sega Retro

Fast facts on the Sega Mega Modem
Manufacturer: Sega
Made for: Sega Mega Drive
Release Date RRP Code
Sega Mega Drive
1990-11-03 ¥9,800 HAA-2951
Sega Mega Drive
JP (Game Toshokan)
1990-11-03 ¥12,800  ?

The Mega Modem (メガモデム) is a modem for the Sega Mega Drive released in 1990 exclusively in Japan. It allows a Mega Drive owner to connect his console to the Internet through services provided by Sega. Ultimately, three services made use of the modem: the Mega Anser, Sega Meganet, and Sansan (there have been other banking services: Naisu-kun Mini and Osaka Bank My Line; and Sumisei Home Tanmatsu, which appears to be a life insurance system — whether or not they use Mega Anser is unconfirmed).

The modem connects to the back of a Mega Drive through the third DE-9 expansion port; consequently, it will only connect to a Model 1 Mega Drive. Furthermore, two models of the Mega Modem are known to exist: one that connects to the Internet through a phone line (which was sold both standalone and with the Meganet's Sega Game Library cartridge) and one that connects through an RS232C cable built into the unit.

TeleGenesis Modem

When the Mega Drive was released in North America as the "Sega Genesis" in August 1989, Sega of America drew attention to a localised variant of the Mega Modem, the TeleGenesis Modem. Originally set to debut shortly after the console, the device was pushed back to July 1990 and given a price tag of around $100[1].

While the accessory was thought to be the same as its Japanese counterpart, it was marketed as offering competitive online play across towns and cities nationwide[2] rather than something akin to Sega Meganet. However, Sega withheld selling the peripheral until "quality modem-based entertainment software" was available in the region[3], which presumably never occurred. By the time of Japanese launch in November, Sega of America were still undecided as to whether to press ahead with a localised variant[4].

The concept of playing video games competitively over the internet did not become a mainstream feature of gaming until well into the 2000s.

Physical scans

Mega Drive, JP

External links


  1. File:EGM US 009.pdf, page 73
  2. File:GamePro US 003.pdf, page 87
  3. File:SegaVisions US 02.pdf, page 14
  4. File:GamePro US 018.pdf, page 22
Sega Mega Drive Hardware
Console Variations Japan | North America | Europe | Brazil | Asia | South Korea | Australia

EZ Games | Heartbeat Personal Trainer | LaserActive | Mega Jet | Mega PC | Mega Play | Mega-Tech System | Nomad | Teradrive

Add-ons Mega-CD (Multi-Mega | Wondermega | CSD-G1M) | 32X (Mega-CD 32X)

Demo System DS-16 | ERX 308P | ERX 318P| Master Mega Converter | MD 8bit Converter | Mega/Master Adaptor | Mega-CD Karaoke | Mega Modem | Nomad PowerBack | Power Base Converter | Pro MegaMaster | Sprobe | Super Magic Drive

Controllers Control Pad | Six Button Control Pad | 6 Button Arcade Pad | Arcade Power Stick 6B | Konami Justifier | MK-1470

Action Chair | Activator | Arcade Power Stick | Keyboard | MegaFire | Mouse | Mega Stick | Menacer | Remote Arcade System | Ten Key Pad

Network Services Sega Channel | Sega Meganet (Sega Game Toshokan) | Tectoy Mega Net | Telebradesco Residência | XB∀ND
Misc. Hardware 4 Way Play | Action Replay | Cartridge Caddy | Cartridge Soft Pak | Cleaning System | Control Pad Extension Cord | Double Pro Fighter | Everdrive MD | Game Cartridge Organizer | Game Genie | Game Wizard | Genipak | Genesis Speakers | Interceptor Mega Disk | Magicard | Region converter cartridges | Mega Everdrive | Mega Anser | Mega Terminal | Miracle Piano Teaching System | Multi Game Hunter | Power Plug | Megaverter | RetroGen | RF Unit (Mega Drive 2) | SCART Cable (Mega Drive 2) | Sega Power Strip | Stereo Audio Video Cable | StuntMaster | Super Multi-play | Team Player | Tototek MD-Pro | Video Game Organizer | Video Entertainment Center | Video Entertainment Cabinet | Video Monitor Cable
Unreleased Hardware Floppy Disk Drive | Mega Play 1010 | Sega VR | Video Jukebox
Consoles on a Chip

Arcade Legends Sega Mega Drive | Mega Drive Volume II‎ | Mega Drive Volume 3 | Street Fighter II': Special Champion Edition‎ | Menacer | OutRun 2019 | Sensible Soccer Plus

Arcade Blast | Arcade Classic | Arcade Master | Arcade Motion Classic | Arcade Motion Dual | Arcade Nano Series | Arcade Portable | Arcade Ultimate | Genesis Gencore | GenMobile | Mega Drive Twin Pads

Mega Drive 3 (2007) | Mega Drive 3 (2008) | Mega Drive 4

Mega Drive 3 (2000) | Micro Drive | Sega Zone

Other Articles Blast Processing | History | List of Games (Asia)