These games were developed specifically for the Genesis hardware and were not available on competing 16-bit consoles like the Super Nintendo at the time.
In the retro gaming community, an "exclusive" pack generally focuses on one of three areas: Platform Exclusives all sega genesis games roms pack exclusive
Ultimately, downloading a massive ROM pack is a surreal experience. It flattens the timeline of the 1990s. You can jump from the launch title Thunder Force III to the twilight-years masterpiece Vectorman 2 in a split second. It creates a museum where the exhibits are playable. These games were developed specifically for the Genesis