SegaXtreme

Yes believe it or not there were some games made using the Photo CD technology and they will run on anything that supports it so not only a saturn mpeg card will run them but a Pc-Fx will also natively run them or a Cd32/Cdi with a mpeg card will also run them, keep in mind that the Pal Saturn mpeg card needs the Photo CD Operator disc while the other cards runs the Photo CDs without it.

Photo CD Dump Collection on Archive.org