Games that can be playable via Sega Netlink (SegaNet in Japan), which was Sega's online service for the Sega Saturn in Japan and the USA. (Source: Wikipedia)
Alternate name: SegaNet
The first video game about Sega Netlink was released on February 1995.
Sega has published all these games
* Sega Meganet - similar service for the Sega Mega Drive.