The Sega Cd Region Free Bios Collection is a library of unofficial BIOS files that allows Sega CD games to be played on unmodified consoles from any region. The collection includes files for all Sega CD models, including the original model, the Sega CD 2, and the Sega CDX.

The Sega CD Region Free Bios Collection was created by fan site Sega Cd Freaks. The site’s founder, known online as “Nemesis”, began developing the collection in 2004 as a way to help gamers from different regions play Sega CD games together. The collection was first released in 2006 as a …