The Famicom Modem (ファミコンネットシステム lit. Family Computer Network System?) is a video game peripheral for the Family Computer released only in Japan in 1988 that uses a card based format like Hudson Soft's/NEC's PC Engine. It allowed the user access to a server that provided game cheats, jokes, weather forecasts, and a small amount of downloadable content. It could also be used to make live stock trades. Five prototype games existed that made use of the modem, including a version of Go, but they were never released on the market.
The idea of downloading content would later be used in the Super Nintendo's Satellaview, the Nintendo 64DD, the GameCube, the Game Boy Advance Cable, the Nintendo DS's DS Download Play, the Wii's WiiConnect24 and its shop, the Nintendo DSi's DSi Shop, and the eShop for the Nintendo 3DS and for the Wii U.
- Atari 2600's GameLine
- Intellivision's PlayCable
- Famicom Disk System
- Sega Genesis's Sega Channel
- Nintendo Entertainment System's Teleplay Modem
- Super Famicom's Satellaview
- 64DD's Randnet