The discs I was talking about were sold separately, not just multi disc games. Although Shenmue having what is basically a "bonus features" disc in the package

The discs I was talking about were sold separately, not just multi disc games. Although Shenmue having what is basically a "bonus features" disc in the package is pretty unique (doesn't Shenmue II have some bonus stuff on Disc 4 as well? I think the Saturn Shenmue prototype video is on that disc?).