List of Dreamcast online games

This is a comprehensive list of online Dreamcast games, including those that could be played on SegaNet, an online gaming service by Sega.

Although SegaNet was discontinued on September 30, 2003, dedicated fans have continued to support online gameplay for Dreamcast games through their own initiatives.

Games with online multiplayer support
Availability of online features may vary depending on the region. Games with release dates displayed in green backgrounds indicate that they have online support, while those with light grey backgrounds were released without online capabilities in that particular region.