For the import side of things, I might be the definitive source, as
I've got a huge collection of factory sealed Turbo & Saturn games.
With VERY little exception, factory sealed games do have the hang tab
that's been referred to. *HOWEVER* there are a few that don't. Many
older double-case Turbo games (and Saturn for that matter) do not have
the nicer plastic. One on the Saturn I've got that's still sealed, but
w/ crappy shrinkwrap is Steam Hearts (I've seen a few of them, and
they've got no hang-tabs, and bought them from reliable sources. Two
others taht come to mind that I bought new from different stores in
Akihabara (when they came out) are Grandia II & Rent-a-hero No. 1 for
the DC. Odd, as they're so recent.