Sega PC is Sega's branding for games it releases on the PC. These are usually ports of console based games, specifically Sega console games back when they still made consoles. This ad from 1995 includes Ecco the Dolphin, Comix Zone and Tomcat Alley.
Ecco the Dolphin was originally released for the Sega Genesis and Sega CD. The PC (Windows) version is a port of the Sega CD version with higher resolution graphics. In 2014, an unofficial fixed and enhanced version that made it compatible with newer Windows versions was released.
Comix Zone was a comic book themed action game released for both the Sega Genesis and PC in 1995. The PC version was also re-released in 2010 via Steam.
Tomcat Alley is a full motion video game that was released for the Sega CD in 1994. It was ported to Windows a little later in 1995. The Windows version has better quality video but I was never a fan of FMV games.
Incidentally, these were all Windows 3.1 games which were pretty rare really. It may be difficult to get these working on more recent Windows versions except for the unofficial hack of Ecco mentioned above.
Read more: https://www.megalextoria.com/wordpress/index.php/2017/08/24/sega-pc/
