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.

According to promotional materials, the Mega Modem would have been renamed the TeleGenesis if it were released in the US. This variant was once set for release in July 1990 for around $100Media:EGM US 009.pdf[1], but was cancelled for unknown reasons (however, Sega were known to be withholding the peripheral until "quality modem-based entertainment software" was available in the regionMedia:SegaVisions US 02.pdf[2]).

Physical scans

Mega Drive, JP

External links


  1. File:EGM US 009.pdf, page 73
  2. File:SegaVisions US 02.pdf, page 14
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